Add m-esr52 at 52.6.0

43 files changed, 3533 insertions, 0 deletions

diff --git a/devtools/shared/specs/actor-registry.js b/devtools/shared/specs/actor-registry.js
new file mode 100644
index 000000000..0f57dc8d2
--- /dev/null
+++ b/devtools/shared/specs/actor-registry.js
@@ -0,0 +1,43 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  RetVal,
+  generateActorSpec,
+} = require("devtools/shared/protocol");
+
+const actorActorSpec = generateActorSpec({
+  typeName: "actorActor",
+
+  methods: {
+    unregister: {
+      request: {},
+      response: {}
+    }
+  },
+});
+
+exports.actorActorSpec = actorActorSpec;
+
+const actorRegistrySpec = generateActorSpec({
+  typeName: "actorRegistry",
+
+  methods: {
+    registerActor: {
+      request: {
+        sourceText: Arg(0, "string"),
+        filename: Arg(1, "string"),
+        options: Arg(2, "json")
+      },
+
+      response: {
+        actorActor: RetVal("actorActor")
+      }
+    }
+  }
+});
+
+exports.actorRegistrySpec = actorRegistrySpec;
diff --git a/devtools/shared/specs/addons.js b/devtools/shared/specs/addons.js
new file mode 100644
index 000000000..6246b9d1f
--- /dev/null
+++ b/devtools/shared/specs/addons.js
@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const addonsSpec = generateActorSpec({
+  typeName: "addons",
+
+  methods: {
+    installTemporaryAddon: {
+      request: { addonPath: Arg(0, "string") },
+      response: { addon: RetVal("json") },
+    },
+  },
+});
+
+exports.addonsSpec = addonsSpec;
diff --git a/devtools/shared/specs/animation.js b/devtools/shared/specs/animation.js
new file mode 100644
index 000000000..20af12c23
--- /dev/null
+++ b/devtools/shared/specs/animation.js
@@ -0,0 +1,151 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  RetVal,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol");
+require("devtools/shared/specs/inspector");
+
+/**
+ * Sent with the 'mutations' event as part of an array of changes, used to
+ * inform fronts of the type of change that occured.
+ */
+types.addDictType("animationMutationChange", {
+  // The type of change ("added" or "removed").
+  type: "string",
+  // The changed AnimationPlayerActor.
+  player: "animationplayer"
+});
+
+const animationPlayerSpec = generateActorSpec({
+  typeName: "animationplayer",
+
+  events: {
+    "changed": {
+      type: "changed",
+      state: Arg(0, "json")
+    }
+  },
+
+  methods: {
+    release: { release: true },
+    getCurrentState: {
+      request: {},
+      response: {
+        data: RetVal("json")
+      }
+    },
+    pause: {
+      request: {},
+      response: {}
+    },
+    play: {
+      request: {},
+      response: {}
+    },
+    ready: {
+      request: {},
+      response: {}
+    },
+    setCurrentTime: {
+      request: {
+        currentTime: Arg(0, "number")
+      },
+      response: {}
+    },
+    setPlaybackRate: {
+      request: {
+        currentTime: Arg(0, "number")
+      },
+      response: {}
+    },
+    getFrames: {
+      request: {},
+      response: {
+        frames: RetVal("json")
+      }
+    },
+    getProperties: {
+      request: {},
+      response: {
+        properties: RetVal("array:json")
+      }
+    }
+  }
+});
+
+exports.animationPlayerSpec = animationPlayerSpec;
+
+const animationsSpec = generateActorSpec({
+  typeName: "animations",
+
+  events: {
+    "mutations": {
+      type: "mutations",
+      changes: Arg(0, "array:animationMutationChange")
+    }
+  },
+
+  methods: {
+    setWalkerActor: {
+      request: {
+        walker: Arg(0, "domwalker")
+      },
+      response: {}
+    },
+    getAnimationPlayersForNode: {
+      request: {
+        actorID: Arg(0, "domnode")
+      },
+      response: {
+        players: RetVal("array:animationplayer")
+      }
+    },
+    stopAnimationPlayerUpdates: {
+      request: {},
+      response: {}
+    },
+    pauseAll: {
+      request: {},
+      response: {}
+    },
+    playAll: {
+      request: {},
+      response: {}
+    },
+    toggleAll: {
+      request: {},
+      response: {}
+    },
+    toggleSeveral: {
+      request: {
+        players: Arg(0, "array:animationplayer"),
+        shouldPause: Arg(1, "boolean")
+      },
+      response: {}
+    },
+    setCurrentTimes: {
+      request: {
+        players: Arg(0, "array:animationplayer"),
+        time: Arg(1, "number"),
+        shouldPause: Arg(2, "boolean")
+      },
+      response: {}
+    },
+    setPlaybackRates: {
+      request: {
+        players: Arg(0, "array:animationplayer"),
+        rate: Arg(1, "number")
+      },
+      response: {}
+    }
+  }
+});
+
+exports.animationsSpec = animationsSpec;
+
diff --git a/devtools/shared/specs/breakpoint.js b/devtools/shared/specs/breakpoint.js
new file mode 100644
index 000000000..e30c03ce8
--- /dev/null
+++ b/devtools/shared/specs/breakpoint.js
@@ -0,0 +1,16 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {generateActorSpec} = require("devtools/shared/protocol");
+
+const breakpointSpec = generateActorSpec({
+  typeName: "breakpoint",
+
+  methods: {
+    delete: {}
+  },
+});
+
+exports.breakpointSpec = breakpointSpec;
diff --git a/devtools/shared/specs/call-watcher.js b/devtools/shared/specs/call-watcher.js
new file mode 100644
index 000000000..34d63111a
--- /dev/null
+++ b/devtools/shared/specs/call-watcher.js
@@ -0,0 +1,79 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const protocol = require("devtools/shared/protocol");
+const { Arg, RetVal, Option, generateActorSpec } = protocol;
+
+/**
+ * Type describing a single function call in a stack trace.
+ */
+protocol.types.addDictType("call-stack-item", {
+  name: "string",
+  file: "string",
+  line: "number"
+});
+
+/**
+ * Type describing an overview of a function call.
+ */
+protocol.types.addDictType("call-details", {
+  type: "number",
+  name: "string",
+  stack: "array:call-stack-item"
+});
+
+const functionCallSpec = generateActorSpec({
+  typeName: "function-call",
+
+  methods: {
+    getDetails: {
+      response: { info: RetVal("call-details") }
+    },
+  },
+});
+
+exports.functionCallSpec = functionCallSpec;
+
+const callWatcherSpec = generateActorSpec({
+  typeName: "call-watcher",
+
+  events: {
+    /**
+     * Events emitted when the `onCall` function isn't provided.
+     */
+    "call": {
+      type: "call",
+      function: Arg(0, "function-call")
+    }
+  },
+
+  methods: {
+    setup: {
+      request: {
+        tracedGlobals: Option(0, "nullable:array:string"),
+        tracedFunctions: Option(0, "nullable:array:string"),
+        startRecording: Option(0, "boolean"),
+        performReload: Option(0, "boolean"),
+        holdWeak: Option(0, "boolean"),
+        storeCalls: Option(0, "boolean")
+      },
+      oneway: true
+    },
+    finalize: {
+      oneway: true
+    },
+    isRecording: {
+      response: RetVal("boolean")
+    },
+    initTimestampEpoch: {},
+    resumeRecording: {},
+    pauseRecording: {
+      response: { calls: RetVal("array:function-call") }
+    },
+    eraseRecording: {},
+  }
+});
+
+exports.callWatcherSpec = callWatcherSpec;
diff --git a/devtools/shared/specs/canvas.js b/devtools/shared/specs/canvas.js
new file mode 100644
index 000000000..dcb26f9a9
--- /dev/null
+++ b/devtools/shared/specs/canvas.js
@@ -0,0 +1,131 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const protocol = require("devtools/shared/protocol");
+const {Arg, Option, RetVal, generateActorSpec} = protocol;
+
+/**
+ * Type representing an ArrayBufferView, serialized fast(er).
+ *
+ * Don't create a new array buffer view from the parsed array on the frontend.
+ * Consumers may copy the data into an existing buffer, or create a new one if
+ * necesasry. For example, this avoids the need for a redundant copy when
+ * populating ImageData objects, at the expense of transferring char views
+ * of a pixel buffer over the protocol instead of a packed int view.
+ *
+ * XXX: It would be nice if on local connections (only), we could just *give*
+ * the buffer directly to the front, instead of going through all this
+ * serialization redundancy.
+ */
+protocol.types.addType("array-buffer-view", {
+  write: (v) => "[" + Array.join(v, ",") + "]",
+  read: (v) => JSON.parse(v)
+});
+
+/**
+ * Type describing a thumbnail or screenshot in a recorded animation frame.
+ */
+protocol.types.addDictType("snapshot-image", {
+  index: "number",
+  width: "number",
+  height: "number",
+  scaling: "number",
+  flipped: "boolean",
+  pixels: "array-buffer-view"
+});
+
+/**
+ * Type describing an overview of a recorded animation frame.
+ */
+protocol.types.addDictType("snapshot-overview", {
+  calls: "array:function-call",
+  thumbnails: "array:snapshot-image",
+  screenshot: "snapshot-image"
+});
+
+exports.CANVAS_CONTEXTS = [
+  "CanvasRenderingContext2D",
+  "WebGLRenderingContext"
+];
+
+exports.ANIMATION_GENERATORS = [
+  "requestAnimationFrame"
+];
+
+exports.LOOP_GENERATORS = [
+  "setTimeout"
+];
+
+exports.DRAW_CALLS = [
+  // 2D canvas
+  "fill",
+  "stroke",
+  "clearRect",
+  "fillRect",
+  "strokeRect",
+  "fillText",
+  "strokeText",
+  "drawImage",
+
+  // WebGL
+  "clear",
+  "drawArrays",
+  "drawElements",
+  "finish",
+  "flush"
+];
+
+exports.INTERESTING_CALLS = [
+  // 2D canvas
+  "save",
+  "restore",
+
+  // WebGL
+  "useProgram"
+];
+
+const frameSnapshotSpec = generateActorSpec({
+  typeName: "frame-snapshot",
+
+  methods: {
+    getOverview: {
+      response: { overview: RetVal("snapshot-overview") }
+    },
+    generateScreenshotFor: {
+      request: { call: Arg(0, "function-call") },
+      response: { screenshot: RetVal("snapshot-image") }
+    },
+  },
+});
+
+exports.frameSnapshotSpec = frameSnapshotSpec;
+
+const canvasSpec = generateActorSpec({
+  typeName: "canvas",
+
+  methods: {
+    setup: {
+      request: { reload: Option(0, "boolean") },
+      oneway: true
+    },
+    finalize: {
+      oneway: true
+    },
+    isInitialized: {
+      response: { initialized: RetVal("boolean") }
+    },
+    isRecording: {
+      response: { recording: RetVal("boolean") }
+    },
+    recordAnimationFrame: {
+      response: { snapshot: RetVal("nullable:frame-snapshot") }
+    },
+    stopRecordingAnimationFrame: {
+      oneway: true
+    },
+  }
+});
+
+exports.canvasSpec = canvasSpec;
diff --git a/devtools/shared/specs/css-properties.js b/devtools/shared/specs/css-properties.js
new file mode 100644
index 000000000..76c85bd74
--- /dev/null
+++ b/devtools/shared/specs/css-properties.js
@@ -0,0 +1,20 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { RetVal, generateActorSpec } = require("devtools/shared/protocol");
+
+const cssPropertiesSpec = generateActorSpec({
+  typeName: "cssProperties",
+
+  methods: {
+    getCSSDatabase: {
+      request: {},
+
+      response: RetVal("json"),
+    }
+  }
+});
+
+exports.cssPropertiesSpec = cssPropertiesSpec;
diff --git a/devtools/shared/specs/csscoverage.js b/devtools/shared/specs/csscoverage.js
new file mode 100644
index 000000000..4c58b09a9
--- /dev/null
+++ b/devtools/shared/specs/csscoverage.js
@@ -0,0 +1,44 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+require("devtools/shared/specs/stylesheets");
+
+const cssUsageSpec = generateActorSpec({
+  typeName: "cssUsage",
+
+  events: {
+    "state-change": {
+      type: "stateChange",
+      stateChange: Arg(0, "json")
+    }
+  },
+
+  methods: {
+    start: {
+      request: { url: Arg(0, "boolean") }
+    },
+    stop: {},
+    toggle: {},
+    oneshot: {},
+    createEditorReport: {
+      request: { url: Arg(0, "string") },
+      response: { reports: RetVal("array:json") }
+    },
+    createEditorReportForSheet: {
+      request: { url: Arg(0, "stylesheet") },
+      response: { reports: RetVal("array:json") }
+    },
+    createPageReport: {
+      response: RetVal("json")
+    },
+    _testOnlyVisitedPages: {
+      response: { value: RetVal("array:string") }
+    },
+  },
+});
+
+exports.cssUsageSpec = cssUsageSpec;
diff --git a/devtools/shared/specs/device.js b/devtools/shared/specs/device.js
new file mode 100644
index 000000000..3237d1593
--- /dev/null
+++ b/devtools/shared/specs/device.js
@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const deviceSpec = generateActorSpec({
+  typeName: "device",
+
+  methods: {
+    getDescription: {request: {}, response: { value: RetVal("json")}},
+    getWallpaper: {request: {}, response: { value: RetVal("longstring")}},
+    screenshotToDataURL: {request: {}, response: { value: RetVal("longstring")}},
+    getRawPermissionsTable: {request: {}, response: { value: RetVal("json")}},
+  },
+});
+
+exports.deviceSpec = deviceSpec;
diff --git a/devtools/shared/specs/director-manager.js b/devtools/shared/specs/director-manager.js
new file mode 100644
index 000000000..8a9bf77ee
--- /dev/null
+++ b/devtools/shared/specs/director-manager.js
@@ -0,0 +1,190 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  types,
+  Arg,
+  Option,
+  RetVal,
+  generateActorSpec,
+} = require("devtools/shared/protocol");
+
+/**
+ * Type describing a messageport event
+ */
+types.addDictType("messageportevent", {
+  isTrusted: "boolean",
+  data: "nullable:primitive",
+  origin: "nullable:string",
+  lastEventId: "nullable:string",
+  source: "messageport",
+  ports: "nullable:array:messageport"
+});
+
+const messagePortSpec = generateActorSpec({
+  typeName: "messageport",
+
+  /**
+   * Events emitted by this actor.
+   */
+  events: {
+    message: {
+      type: "message",
+      msg: Arg(0, "nullable:messageportevent")
+    }
+  },
+
+  methods: {
+    postMessage: {
+      oneway: true,
+      request: {
+        msg: Arg(0, "nullable:json")
+      }
+    },
+    start: {
+      oneway: true,
+      request: {}
+    },
+    close: {
+      oneway: true,
+      request: {}
+    },
+    finalize: {
+      oneway: true
+    },
+  },
+});
+
+exports.messagePortSpec = messagePortSpec;
+
+/**
+ * Type describing a director-script error
+ */
+types.addDictType("director-script-error", {
+  directorScriptId: "string",
+  message: "nullable:string",
+  stack: "nullable:string",
+  fileName: "nullable:string",
+  lineNumber: "nullable:number",
+  columnNumber: "nullable:number"
+});
+
+/**
+ * Type describing a director-script attach event
+ */
+types.addDictType("director-script-attach", {
+  directorScriptId: "string",
+  url: "string",
+  innerId: "number",
+  port: "nullable:messageport"
+});
+
+/**
+ * Type describing a director-script detach event
+ */
+types.addDictType("director-script-detach", {
+  directorScriptId: "string",
+  innerId: "number"
+});
+
+const directorScriptSpec = generateActorSpec({
+  typeName: "director-script",
+
+  /**
+   * Events emitted by this actor.
+   */
+  events: {
+    error: {
+      type: "error",
+      data: Arg(0, "director-script-error")
+    },
+    attach: {
+      type: "attach",
+      data: Arg(0, "director-script-attach")
+    },
+    detach: {
+      type: "detach",
+      data: Arg(0, "director-script-detach")
+    }
+  },
+
+  methods: {
+    setup: {
+      request: {
+        reload: Option(0, "boolean"),
+        skipAttach: Option(0, "boolean")
+      },
+      oneway: true
+    },
+    getMessagePort: {
+      request: { },
+      response: {
+        port: RetVal("nullable:messageport")
+      }
+    },
+    finalize: {
+      oneway: true
+    },
+  },
+});
+
+exports.directorScriptSpec = directorScriptSpec;
+
+const directorManagerSpec = generateActorSpec({
+  typeName: "director-manager",
+
+  /**
+   * Events emitted by this actor.
+   */
+  events: {
+    "director-script-error": {
+      type: "error",
+      data: Arg(0, "director-script-error")
+    },
+    "director-script-attach": {
+      type: "attach",
+      data: Arg(0, "director-script-attach")
+    },
+    "director-script-detach": {
+      type: "detach",
+      data: Arg(0, "director-script-detach")
+    }
+  },
+
+  methods: {
+    list: {
+      response: {
+        directorScripts: RetVal("json")
+      }
+    },
+    enableByScriptIds: {
+      oneway: true,
+      request: {
+        selectedIds: Arg(0, "array:string"),
+        reload: Option(1, "boolean")
+      }
+    },
+    disableByScriptIds: {
+      oneway: true,
+      request: {
+        selectedIds: Arg(0, "array:string"),
+        reload: Option(1, "boolean")
+      }
+    },
+    getByScriptId: {
+      request: {
+        scriptId: Arg(0, "string")
+      },
+      response: {
+        directorScript: RetVal("director-script")
+      }
+    },
+    finalize: {
+      oneway: true
+    },
+  },
+});
+
+exports.directorManagerSpec = directorManagerSpec;
diff --git a/devtools/shared/specs/director-registry.js b/devtools/shared/specs/director-registry.js
new file mode 100644
index 000000000..8ebb08eea
--- /dev/null
+++ b/devtools/shared/specs/director-registry.js
@@ -0,0 +1,41 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, Option, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const directorRegistrySpec = generateActorSpec({
+  typeName: "director-registry",
+
+  methods: {
+    finalize: {
+      oneway: true
+    },
+    install: {
+      request: {
+        scriptId: Arg(0, "string"),
+        scriptCode: Option(1, "string"),
+        scriptOptions: Option(1, "nullable:json")
+      },
+      response: {
+        success: RetVal("boolean")
+      }
+    },
+    uninstall: {
+      request: {
+        scritpId: Arg(0, "string")
+      },
+      response: {
+        success: RetVal("boolean")
+      }
+    },
+    list: {
+      response: {
+        directorScripts: RetVal("array:string")
+      }
+    },
+  },
+});
+
+exports.directorRegistrySpec = directorRegistrySpec;
diff --git a/devtools/shared/specs/emulation.js b/devtools/shared/specs/emulation.js
new file mode 100644
index 000000000..1267feaf9
--- /dev/null
+++ b/devtools/shared/specs/emulation.js
@@ -0,0 +1,106 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, RetVal, generateActorSpec } = require("devtools/shared/protocol");
+
+const emulationSpec = generateActorSpec({
+  typeName: "emulation",
+
+  methods: {
+    setDPPXOverride: {
+      request: {
+        dppx: Arg(0, "number")
+      },
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+
+    getDPPXOverride: {
+      request: {},
+      response: {
+        dppx: RetVal("number")
+      }
+    },
+
+    clearDPPXOverride: {
+      request: {},
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+
+    setNetworkThrottling: {
+      request: {
+        options: Arg(0, "json")
+      },
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+
+    getNetworkThrottling: {
+      request: {},
+      response: {
+        state: RetVal("json")
+      }
+    },
+
+    clearNetworkThrottling: {
+      request: {},
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+
+    setTouchEventsOverride: {
+      request: {
+        flag: Arg(0, "number")
+      },
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+
+    getTouchEventsOverride: {
+      request: {},
+      response: {
+        flag: RetVal("number")
+      }
+    },
+
+    clearTouchEventsOverride: {
+      request: {},
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+
+    setUserAgentOverride: {
+      request: {
+        flag: Arg(0, "string")
+      },
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+
+    getUserAgentOverride: {
+      request: {},
+      response: {
+        userAgent: RetVal("string")
+      }
+    },
+
+    clearUserAgentOverride: {
+      request: {},
+      response: {
+        valueChanged: RetVal("boolean")
+      }
+    },
+  }
+});
+
+exports.emulationSpec = emulationSpec;
diff --git a/devtools/shared/specs/environment.js b/devtools/shared/specs/environment.js
new file mode 100644
index 000000000..d320d98a4
--- /dev/null
+++ b/devtools/shared/specs/environment.js
@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const environmentSpec = generateActorSpec({
+  typeName: "environment",
+
+  methods: {
+    assign: {
+      request: {
+        name: Arg(1),
+        value: Arg(2)
+      }
+    },
+    bindings: {
+      request: {},
+      response: {
+        bindings: RetVal("json")
+      }
+    },
+  },
+});
+
+exports.environmentSpec = environmentSpec;
diff --git a/devtools/shared/specs/eventlooplag.js b/devtools/shared/specs/eventlooplag.js
new file mode 100644
index 000000000..1498d5f63
--- /dev/null
+++ b/devtools/shared/specs/eventlooplag.js
@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, RetVal, generateActorSpec } = require("devtools/shared/protocol");
+
+const eventLoopLagSpec = generateActorSpec({
+  typeName: "eventLoopLag",
+
+  events: {
+    "event-loop-lag": {
+      type: "event-loop-lag",
+      // duration of the lag in milliseconds.
+      time: Arg(0, "number")
+    }
+  },
+
+  methods: {
+    start: {
+      request: {},
+      response: {success: RetVal("number")}
+    },
+    stop: {
+      request: {},
+      response: {}
+    }
+  }
+});
+
+exports.eventLoopLagSpec = eventLoopLagSpec;
diff --git a/devtools/shared/specs/frame.js b/devtools/shared/specs/frame.js
new file mode 100644
index 000000000..6365d6e90
--- /dev/null
+++ b/devtools/shared/specs/frame.js
@@ -0,0 +1,14 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {generateActorSpec} = require("devtools/shared/protocol");
+
+const frameSpec = generateActorSpec({
+  typeName: "frame",
+
+  methods: {},
+});
+
+exports.frameSpec = frameSpec;
diff --git a/devtools/shared/specs/framerate.js b/devtools/shared/specs/framerate.js
new file mode 100644
index 000000000..9fb2dff5d
--- /dev/null
+++ b/devtools/shared/specs/framerate.js
@@ -0,0 +1,34 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, RetVal, generateActorSpec } = require("devtools/shared/protocol");
+
+const framerateSpec = generateActorSpec({
+  typeName: "framerate",
+
+  methods: {
+    startRecording: {},
+    stopRecording: {
+      request: {
+        beginAt: Arg(0, "nullable:number"),
+        endAt: Arg(1, "nullable:number")
+      },
+      response: { ticks: RetVal("array:number") }
+    },
+    cancelRecording: {},
+    isRecording: {
+      response: { recording: RetVal("boolean") }
+    },
+    getPendingTicks: {
+      request: {
+        beginAt: Arg(0, "nullable:number"),
+        endAt: Arg(1, "nullable:number")
+      },
+      response: { ticks: RetVal("array:number") }
+    }
+  }
+});
+
+exports.framerateSpec = framerateSpec;
diff --git a/devtools/shared/specs/gcli.js b/devtools/shared/specs/gcli.js
new file mode 100644
index 000000000..2e0768bc8
--- /dev/null
+++ b/devtools/shared/specs/gcli.js
@@ -0,0 +1,86 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, RetVal, generateActorSpec } = require("devtools/shared/protocol");
+
+const gcliSpec = generateActorSpec({
+  typeName: "gcli",
+
+  events: {
+    "commands-changed": {
+      type: "commandsChanged"
+    }
+  },
+
+  methods: {
+    _testOnlyAddItemsByModule: {
+      request: {
+        customProps: Arg(0, "array:string")
+      }
+    },
+    _testOnlyRemoveItemsByModule: {
+      request: {
+        customProps: Arg(0, "array:string")
+      }
+    },
+    specs: {
+      request: {
+        customProps: Arg(0, "nullable:array:string")
+      },
+      response: {
+        value: RetVal("array:json")
+      }
+    },
+    execute: {
+      request: {
+        // The command string
+        typed: Arg(0, "string")
+      },
+      response: RetVal("json")
+    },
+    state: {
+      request: {
+        // The command string
+        typed: Arg(0, "string"),
+        // Cursor start position
+        start: Arg(1, "number"),
+        // The prediction offset (# times UP/DOWN pressed)
+        rank: Arg(2, "number")
+      },
+      response: RetVal("json")
+    },
+    parseType: {
+      request: {
+        // The command string
+        typed: Arg(0, "string"),
+        // The name of the parameter to parse
+        paramName: Arg(1, "string")
+      },
+      response: RetVal("json")
+    },
+    nudgeType: {
+      request: {
+        // The command string
+        typed: Arg(0, "string"),
+        // +1/-1 for increment / decrement
+        by: Arg(1, "number"),
+        // The name of the parameter to parse
+        paramName: Arg(2, "string")
+      },
+      response: RetVal("string")
+    },
+    getSelectionLookup: {
+      request: {
+        // The command containing the parameter in question
+        commandName: Arg(0, "string"),
+        // The name of the parameter
+        paramName: Arg(1, "string"),
+      },
+      response: RetVal("json")
+    }
+  }
+});
+
+exports.gcliSpec = gcliSpec;
diff --git a/devtools/shared/specs/heap-snapshot-file.js b/devtools/shared/specs/heap-snapshot-file.js
new file mode 100644
index 000000000..dfd03e1fa
--- /dev/null
+++ b/devtools/shared/specs/heap-snapshot-file.js
@@ -0,0 +1,20 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, generateActorSpec } = require("devtools/shared/protocol");
+
+const heapSnapshotFileSpec = generateActorSpec({
+  typeName: "heapSnapshotFile",
+
+  methods: {
+    transferHeapSnapshot: {
+      request: {
+        snapshotId: Arg(0, "string")
+      }
+    }
+  },
+});
+
+exports.heapSnapshotFileSpec = heapSnapshotFileSpec;
diff --git a/devtools/shared/specs/highlighters.js b/devtools/shared/specs/highlighters.js
new file mode 100644
index 000000000..8335b22d9
--- /dev/null
+++ b/devtools/shared/specs/highlighters.js
@@ -0,0 +1,63 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  Option,
+  RetVal,
+  generateActorSpec
+} = require("devtools/shared/protocol");
+
+const highlighterSpec = generateActorSpec({
+  typeName: "highlighter",
+
+  methods: {
+    showBoxModel: {
+      request: {
+        node: Arg(0, "domnode"),
+        region: Option(1),
+        hideInfoBar: Option(1),
+        hideGuides: Option(1),
+        showOnly: Option(1),
+        onlyRegionArea: Option(1)
+      }
+    },
+    hideBoxModel: {
+      request: {}
+    },
+    pick: {},
+    pickAndFocus: {},
+    cancelPick: {}
+  }
+});
+
+exports.highlighterSpec = highlighterSpec;
+
+const customHighlighterSpec = generateActorSpec({
+  typeName: "customhighlighter",
+
+  methods: {
+    release: {
+      release: true
+    },
+    show: {
+      request: {
+        node: Arg(0, "domnode"),
+        options: Arg(1, "nullable:json")
+      },
+      response: {
+        value: RetVal("nullable:boolean")
+      }
+    },
+    hide: {
+      request: {}
+    },
+    finalize: {
+      oneway: true
+    }
+  }
+});
+
+exports.customHighlighterSpec = customHighlighterSpec;
diff --git a/devtools/shared/specs/inspector.js b/devtools/shared/specs/inspector.js
new file mode 100644
index 000000000..28736ed34
--- /dev/null
+++ b/devtools/shared/specs/inspector.js
@@ -0,0 +1,445 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  Option,
+  RetVal,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol");
+const { nodeSpec } = require("devtools/shared/specs/node");
+require("devtools/shared/specs/styles");
+require("devtools/shared/specs/highlighters");
+require("devtools/shared/specs/layout");
+
+exports.nodeSpec = nodeSpec;
+
+/**
+ * Returned from any call that might return a node that isn't connected to root
+ * by nodes the child has seen, such as querySelector.
+ */
+types.addDictType("disconnectedNode", {
+  // The actual node to return
+  node: "domnode",
+
+  // Nodes that are needed to connect the node to a node the client has already
+  // seen
+  newParents: "array:domnode"
+});
+
+types.addDictType("disconnectedNodeArray", {
+  // The actual node list to return
+  nodes: "array:domnode",
+
+  // Nodes that are needed to connect those nodes to the root.
+  newParents: "array:domnode"
+});
+
+types.addDictType("dommutation", {});
+
+types.addDictType("searchresult", {
+  list: "domnodelist",
+  // Right now there is isn't anything required for metadata,
+  // but it's json so it can be extended with extra data.
+  metadata: "array:json"
+});
+
+const nodeListSpec = generateActorSpec({
+  typeName: "domnodelist",
+
+  methods: {
+    item: {
+      request: { item: Arg(0) },
+      response: RetVal("disconnectedNode")
+    },
+    items: {
+      request: {
+        start: Arg(0, "nullable:number"),
+        end: Arg(1, "nullable:number")
+      },
+      response: RetVal("disconnectedNodeArray")
+    },
+    release: {
+      release: true
+    }
+  }
+});
+
+exports.nodeListSpec = nodeListSpec;
+
+// Some common request/response templates for the dom walker
+
+var nodeArrayMethod = {
+  request: {
+    node: Arg(0, "domnode"),
+    maxNodes: Option(1),
+    center: Option(1, "domnode"),
+    start: Option(1, "domnode"),
+    whatToShow: Option(1)
+  },
+  response: RetVal(types.addDictType("domtraversalarray", {
+    nodes: "array:domnode"
+  }))
+};
+
+var traversalMethod = {
+  request: {
+    node: Arg(0, "domnode"),
+    whatToShow: Option(1)
+  },
+  response: {
+    node: RetVal("nullable:domnode")
+  }
+};
+
+const walkerSpec = generateActorSpec({
+  typeName: "domwalker",
+
+  events: {
+    "new-mutations": {
+      type: "newMutations"
+    },
+    "picker-node-picked": {
+      type: "pickerNodePicked",
+      node: Arg(0, "disconnectedNode")
+    },
+    "picker-node-previewed": {
+      type: "pickerNodePreviewed",
+      node: Arg(0, "disconnectedNode")
+    },
+    "picker-node-hovered": {
+      type: "pickerNodeHovered",
+      node: Arg(0, "disconnectedNode")
+    },
+    "picker-node-canceled": {
+      type: "pickerNodeCanceled"
+    },
+    "highlighter-ready": {
+      type: "highlighter-ready"
+    },
+    "highlighter-hide": {
+      type: "highlighter-hide"
+    },
+    "display-change": {
+      type: "display-change",
+      nodes: Arg(0, "array:domnode")
+    },
+    // The walker actor emits a useful "resize" event to its front to let
+    // clients know when the browser window gets resized. This may be useful
+    // for refreshing a DOM node's styles for example, since those may depend on
+    // media-queries.
+    "resize": {
+      type: "resize"
+    }
+  },
+
+  methods: {
+    release: {
+      release: true
+    },
+    pick: {
+      request: {},
+      response: RetVal("disconnectedNode")
+    },
+    cancelPick: {},
+    highlight: {
+      request: {node: Arg(0, "nullable:domnode")}
+    },
+    document: {
+      request: { node: Arg(0, "nullable:domnode") },
+      response: { node: RetVal("domnode") },
+    },
+    documentElement: {
+      request: { node: Arg(0, "nullable:domnode") },
+      response: { node: RetVal("domnode") },
+    },
+    parents: {
+      request: {
+        node: Arg(0, "domnode"),
+        sameDocument: Option(1),
+        sameTypeRootTreeItem: Option(1)
+      },
+      response: {
+        nodes: RetVal("array:domnode")
+      },
+    },
+    retainNode: {
+      request: { node: Arg(0, "domnode") },
+      response: {}
+    },
+    unretainNode: {
+      request: { node: Arg(0, "domnode") },
+      response: {},
+    },
+    releaseNode: {
+      request: {
+        node: Arg(0, "domnode"),
+        force: Option(1)
+      }
+    },
+    children: nodeArrayMethod,
+    siblings: nodeArrayMethod,
+    nextSibling: traversalMethod,
+    previousSibling: traversalMethod,
+    findInspectingNode: {
+      request: {},
+      response: RetVal("disconnectedNode")
+    },
+    querySelector: {
+      request: {
+        node: Arg(0, "domnode"),
+        selector: Arg(1)
+      },
+      response: RetVal("disconnectedNode")
+    },
+    querySelectorAll: {
+      request: {
+        node: Arg(0, "domnode"),
+        selector: Arg(1)
+      },
+      response: {
+        list: RetVal("domnodelist")
+      }
+    },
+    multiFrameQuerySelectorAll: {
+      request: {
+        selector: Arg(0)
+      },
+      response: {
+        list: RetVal("domnodelist")
+      }
+    },
+    search: {
+      request: {
+        query: Arg(0),
+      },
+      response: {
+        list: RetVal("searchresult"),
+      }
+    },
+    getSuggestionsForQuery: {
+      request: {
+        query: Arg(0),
+        completing: Arg(1),
+        selectorState: Arg(2)
+      },
+      response: {
+        list: RetVal("array:array:string")
+      }
+    },
+    addPseudoClassLock: {
+      request: {
+        node: Arg(0, "domnode"),
+        pseudoClass: Arg(1),
+        parents: Option(2)
+      },
+      response: {}
+    },
+    hideNode: {
+      request: { node: Arg(0, "domnode") }
+    },
+    unhideNode: {
+      request: { node: Arg(0, "domnode") }
+    },
+    removePseudoClassLock: {
+      request: {
+        node: Arg(0, "domnode"),
+        pseudoClass: Arg(1),
+        parents: Option(2)
+      },
+      response: {}
+    },
+    clearPseudoClassLocks: {
+      request: {
+        node: Arg(0, "nullable:domnode")
+      },
+      response: {}
+    },
+    innerHTML: {
+      request: {
+        node: Arg(0, "domnode")
+      },
+      response: {
+        value: RetVal("longstring")
+      }
+    },
+    setInnerHTML: {
+      request: {
+        node: Arg(0, "domnode"),
+        value: Arg(1, "string"),
+      },
+      response: {}
+    },
+    outerHTML: {
+      request: {
+        node: Arg(0, "domnode")
+      },
+      response: {
+        value: RetVal("longstring")
+      }
+    },
+    setOuterHTML: {
+      request: {
+        node: Arg(0, "domnode"),
+        value: Arg(1, "string"),
+      },
+      response: {}
+    },
+    insertAdjacentHTML: {
+      request: {
+        node: Arg(0, "domnode"),
+        position: Arg(1, "string"),
+        value: Arg(2, "string")
+      },
+      response: RetVal("disconnectedNodeArray")
+    },
+    duplicateNode: {
+      request: {
+        node: Arg(0, "domnode")
+      },
+      response: {}
+    },
+    removeNode: {
+      request: {
+        node: Arg(0, "domnode")
+      },
+      response: {
+        nextSibling: RetVal("nullable:domnode")
+      }
+    },
+    removeNodes: {
+      request: {
+        node: Arg(0, "array:domnode")
+      },
+      response: {}
+    },
+    insertBefore: {
+      request: {
+        node: Arg(0, "domnode"),
+        parent: Arg(1, "domnode"),
+        sibling: Arg(2, "nullable:domnode")
+      },
+      response: {}
+    },
+    editTagName: {
+      request: {
+        node: Arg(0, "domnode"),
+        tagName: Arg(1, "string")
+      },
+      response: {}
+    },
+    getMutations: {
+      request: {
+        cleanup: Option(0)
+      },
+      response: {
+        mutations: RetVal("array:dommutation")
+      }
+    },
+    isInDOMTree: {
+      request: { node: Arg(0, "domnode") },
+      response: { attached: RetVal("boolean") }
+    },
+    getNodeActorFromObjectActor: {
+      request: {
+        objectActorID: Arg(0, "string")
+      },
+      response: {
+        nodeFront: RetVal("nullable:disconnectedNode")
+      }
+    },
+    getStyleSheetOwnerNode: {
+      request: {
+        styleSheetActorID: Arg(0, "string")
+      },
+      response: {
+        ownerNode: RetVal("nullable:disconnectedNode")
+      }
+    },
+    getNodeFromActor: {
+      request: {
+        actorID: Arg(0, "string"),
+        path: Arg(1, "array:string")
+      },
+      response: {
+        node: RetVal("nullable:disconnectedNode")
+      }
+    },
+    getLayoutInspector: {
+      request: {},
+      response: {
+        actor: RetVal("layout")
+      }
+    }
+  }
+});
+
+exports.walkerSpec = walkerSpec;
+
+const inspectorSpec = generateActorSpec({
+  typeName: "inspector",
+
+  events: {
+    "color-picked": {
+      type: "colorPicked",
+      color: Arg(0, "string")
+    },
+    "color-pick-canceled": {
+      type: "colorPickCanceled"
+    }
+  },
+
+  methods: {
+    getWalker: {
+      request: {
+        options: Arg(0, "nullable:json")
+      },
+      response: {
+        walker: RetVal("domwalker")
+      }
+    },
+    getPageStyle: {
+      request: {},
+      response: {
+        pageStyle: RetVal("pagestyle")
+      }
+    },
+    getHighlighter: {
+      request: {
+        autohide: Arg(0, "boolean")
+      },
+      response: {
+        highligter: RetVal("highlighter")
+      }
+    },
+    getHighlighterByType: {
+      request: {
+        typeName: Arg(0)
+      },
+      response: {
+        highlighter: RetVal("nullable:customhighlighter")
+      }
+    },
+    getImageDataFromURL: {
+      request: {url: Arg(0), maxDim: Arg(1, "nullable:number")},
+      response: RetVal("imageData")
+    },
+    resolveRelativeURL: {
+      request: {url: Arg(0, "string"), node: Arg(1, "nullable:domnode")},
+      response: {value: RetVal("string")}
+    },
+    pickColorFromPage: {
+      request: {options: Arg(0, "nullable:json")},
+      response: {}
+    },
+    cancelPickColorFromPage: {
+      request: {},
+      response: {}
+    }
+  }
+});
+
+exports.inspectorSpec = inspectorSpec;
diff --git a/devtools/shared/specs/layout.js b/devtools/shared/specs/layout.js
new file mode 100644
index 000000000..80a0d5f9b
--- /dev/null
+++ b/devtools/shared/specs/layout.js
@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const { Arg, generateActorSpec, RetVal } = require("devtools/shared/protocol");
+require("devtools/shared/specs/node");
+
+const gridSpec = generateActorSpec({
+  typeName: "grid",
+
+  methods: {},
+});
+
+const layoutSpec = generateActorSpec({
+  typeName: "layout",
+
+  methods: {
+    getAllGrids: {
+      request: {
+        rootNode: Arg(0, "domnode"),
+        traverseFrames: Arg(1, "boolean")
+      },
+      response: {
+        grids: RetVal("array:grid")
+      }
+    }
+  },
+});
+
+exports.gridSpec = gridSpec;
+exports.layoutSpec = layoutSpec;
diff --git a/devtools/shared/specs/memory.js b/devtools/shared/specs/memory.js
new file mode 100644
index 000000000..3bff6dc38
--- /dev/null
+++ b/devtools/shared/specs/memory.js
@@ -0,0 +1,124 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  RetVal,
+  types,
+  generateActorSpec,
+} = require("devtools/shared/protocol");
+
+types.addDictType("AllocationsRecordingOptions", {
+  // The probability we sample any given allocation when recording
+  // allocations. Must be between 0.0 and 1.0. Defaults to 1.0, or sampling
+  // every allocation.
+  probability: "number",
+
+  // The maximum number of of allocation events to keep in the allocations
+  // log. If new allocations arrive, when we are already at capacity, the oldest
+  // allocation event is lost. This number must fit in a 32 bit signed integer.
+  maxLogLength: "number"
+});
+
+const memorySpec = generateActorSpec({
+  typeName: "memory",
+
+  /**
+   * The set of unsolicited events the MemoryActor emits that will be sent over
+   * the RDP (by protocol.js).
+   */
+  events: {
+    // Same format as the data passed to the
+    // `Debugger.Memory.prototype.onGarbageCollection` hook. See
+    // `js/src/doc/Debugger/Debugger.Memory.md` for documentation.
+    "garbage-collection": {
+      type: "garbage-collection",
+      data: Arg(0, "json"),
+    },
+
+    // Same data as the data from `getAllocations` -- only fired if
+    // `autoDrain` set during `startRecordingAllocations`.
+    "allocations": {
+      type: "allocations",
+      data: Arg(0, "json"),
+    },
+  },
+
+  methods: {
+    attach: {
+      request: {},
+      response: {
+        type: "attached"
+      }
+    },
+    detach: {
+      request: {},
+      response: {
+        type: "detached"
+      }
+    },
+    getState: {
+      response: {
+        state: RetVal(0, "string")
+      }
+    },
+    takeCensus: {
+      request: {},
+      response: RetVal("json")
+    },
+    startRecordingAllocations: {
+      request: {
+        options: Arg(0, "nullable:AllocationsRecordingOptions")
+      },
+      response: {
+        // Accept `nullable` in the case of server Gecko <= 37, handled on the front
+        value: RetVal(0, "nullable:number")
+      }
+    },
+    stopRecordingAllocations: {
+      request: {},
+      response: {
+        // Accept `nullable` in the case of server Gecko <= 37, handled on the front
+        value: RetVal(0, "nullable:number")
+      }
+    },
+    getAllocationsSettings: {
+      request: {},
+      response: {
+        options: RetVal(0, "json")
+      }
+    },
+    getAllocations: {
+      request: {},
+      response: RetVal("json")
+    },
+    forceGarbageCollection: {
+      request: {},
+      response: {}
+    },
+    forceCycleCollection: {
+      request: {},
+      response: {}
+    },
+    measure: {
+      request: {},
+      response: RetVal("json"),
+    },
+    residentUnique: {
+      request: {},
+      response: { value: RetVal("number") }
+    },
+    saveHeapSnapshot: {
+      request: {
+        boundaries: Arg(0, "nullable:json")
+      },
+      response: {
+        snapshotId: RetVal("string")
+      }
+    },
+  },
+});
+
+exports.memorySpec = memorySpec;
diff --git a/devtools/shared/specs/moz.build b/devtools/shared/specs/moz.build
new file mode 100644
index 000000000..52a810637
--- /dev/null
+++ b/devtools/shared/specs/moz.build
@@ -0,0 +1,50 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DevToolsModules(
+    'actor-registry.js',
+    'addons.js',
+    'animation.js',
+    'breakpoint.js',
+    'call-watcher.js',
+    'canvas.js',
+    'css-properties.js',
+    'csscoverage.js',
+    'device.js',
+    'director-manager.js',
+    'director-registry.js',
+    'emulation.js',
+    'environment.js',
+    'eventlooplag.js',
+    'frame.js',
+    'framerate.js',
+    'gcli.js',
+    'heap-snapshot-file.js',
+    'highlighters.js',
+    'inspector.js',
+    'layout.js',
+    'memory.js',
+    'node.js',
+    'performance-entries.js',
+    'performance-recording.js',
+    'performance.js',
+    'preference.js',
+    'profiler.js',
+    'promises.js',
+    'reflow.js',
+    'script.js',
+    'settings.js',
+    'source.js',
+    'storage.js',
+    'string.js',
+    'styleeditor.js',
+    'styles.js',
+    'stylesheets.js',
+    'timeline.js',
+    'webaudio.js',
+    'webgl.js',
+    'worker.js'
+)
diff --git a/devtools/shared/specs/node.js b/devtools/shared/specs/node.js
new file mode 100644
index 000000000..ea3d1b264
--- /dev/null
+++ b/devtools/shared/specs/node.js
@@ -0,0 +1,67 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  RetVal,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol.js");
+
+types.addDictType("imageData", {
+  // The image data
+  data: "nullable:longstring",
+  // The original image dimensions
+  size: "json"
+});
+
+const nodeSpec = generateActorSpec({
+  typeName: "domnode",
+
+  methods: {
+    getNodeValue: {
+      request: {},
+      response: {
+        value: RetVal("longstring")
+      }
+    },
+    setNodeValue: {
+      request: { value: Arg(0) },
+      response: {}
+    },
+    getUniqueSelector: {
+      request: {},
+      response: {
+        value: RetVal("string")
+      }
+    },
+    scrollIntoView: {
+      request: {},
+      response: {}
+    },
+    getImageData: {
+      request: {maxDim: Arg(0, "nullable:number")},
+      response: RetVal("imageData")
+    },
+    getEventListenerInfo: {
+      request: {},
+      response: {
+        events: RetVal("json")
+      }
+    },
+    modifyAttributes: {
+      request: {
+        modifications: Arg(0, "array:json")
+      },
+      response: {}
+    },
+    getFontFamilyDataURL: {
+      request: {font: Arg(0, "string"), fillStyle: Arg(1, "nullable:string")},
+      response: RetVal("imageData")
+    }
+  }
+});
+
+exports.nodeSpec = nodeSpec;
diff --git a/devtools/shared/specs/performance-entries.js b/devtools/shared/specs/performance-entries.js
new file mode 100644
index 000000000..107afb779
--- /dev/null
+++ b/devtools/shared/specs/performance-entries.js
@@ -0,0 +1,25 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, generateActorSpec } = require("devtools/shared/protocol");
+
+const performanceEntriesSpec = generateActorSpec({
+  typeName: "performanceEntries",
+
+  events: {
+    "entry": {
+      type: "entry",
+      // object containing performance entry name, type, origin, and epoch.
+      detail: Arg(0, "json")
+    }
+  },
+
+  methods: {
+    start: {},
+    stop: {}
+  }
+});
+
+exports.performanceEntriesSpec = performanceEntriesSpec;
diff --git a/devtools/shared/specs/performance-recording.js b/devtools/shared/specs/performance-recording.js
new file mode 100644
index 000000000..562abc6f7
--- /dev/null
+++ b/devtools/shared/specs/performance-recording.js
@@ -0,0 +1,12 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { generateActorSpec } = require("devtools/shared/protocol");
+
+const performanceRecordingSpec = generateActorSpec({
+  typeName: "performance-recording"
+});
+
+exports.performanceRecordingSpec = performanceRecordingSpec;
diff --git a/devtools/shared/specs/performance.js b/devtools/shared/specs/performance.js
new file mode 100644
index 000000000..30a570e9a
--- /dev/null
+++ b/devtools/shared/specs/performance.js
@@ -0,0 +1,88 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, RetVal, generateActorSpec } = require("devtools/shared/protocol");
+require("devtools/shared/specs/performance-recording");
+
+const performanceSpec = generateActorSpec({
+  typeName: "performance",
+
+  /**
+   * The set of events the PerformanceActor emits over RDP.
+   */
+  events: {
+    "recording-started": {
+      recording: Arg(0, "performance-recording"),
+    },
+    "recording-stopping": {
+      recording: Arg(0, "performance-recording"),
+    },
+    "recording-stopped": {
+      recording: Arg(0, "performance-recording"),
+      data: Arg(1, "json"),
+    },
+    "profiler-status": {
+      data: Arg(0, "json"),
+    },
+    "console-profile-start": {},
+    "timeline-data": {
+      name: Arg(0, "string"),
+      data: Arg(1, "json"),
+      recordings: Arg(2, "array:performance-recording"),
+    },
+  },
+
+  methods: {
+    connect: {
+      request: { options: Arg(0, "nullable:json") },
+      response: RetVal("json")
+    },
+
+    canCurrentlyRecord: {
+      request: {},
+      response: { value: RetVal("json") }
+    },
+
+    startRecording: {
+      request: {
+        options: Arg(0, "nullable:json"),
+      },
+      response: {
+        recording: RetVal("nullable:performance-recording")
+      }
+    },
+
+    stopRecording: {
+      request: {
+        options: Arg(0, "performance-recording"),
+      },
+      response: {
+        recording: RetVal("performance-recording")
+      }
+    },
+
+    isRecording: {
+      request: {},
+      response: { isRecording: RetVal("boolean") }
+    },
+
+    getRecordings: {
+      request: {},
+      response: { recordings: RetVal("array:performance-recording") }
+    },
+
+    getConfiguration: {
+      request: {},
+      response: { config: RetVal("json") }
+    },
+
+    setProfilerStatusInterval: {
+      request: { interval: Arg(0, "number") },
+      response: { oneway: true }
+    },
+  }
+});
+
+exports.performanceSpec = performanceSpec;
diff --git a/devtools/shared/specs/preference.js b/devtools/shared/specs/preference.js
new file mode 100644
index 000000000..54123d813
--- /dev/null
+++ b/devtools/shared/specs/preference.js
@@ -0,0 +1,47 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const preferenceSpec = generateActorSpec({
+  typeName: "preference",
+
+  methods: {
+    getBoolPref: {
+      request: { value: Arg(0) },
+      response: { value: RetVal("boolean") }
+    },
+    getCharPref: {
+      request: { value: Arg(0) },
+      response: { value: RetVal("string") }
+    },
+    getIntPref: {
+      request: { value: Arg(0) },
+      response: { value: RetVal("number") }
+    },
+    getAllPrefs: {
+      request: {},
+      response: { value: RetVal("json") }
+    },
+    setBoolPref: {
+      request: { name: Arg(0), value: Arg(1) },
+      response: {}
+    },
+    setCharPref: {
+      request: { name: Arg(0), value: Arg(1) },
+      response: {}
+    },
+    setIntPref: {
+      request: { name: Arg(0), value: Arg(1) },
+      response: {}
+    },
+    clearUserPref: {
+      request: { name: Arg(0) },
+      response: {}
+    }
+  },
+});
+
+exports.preferenceSpec = preferenceSpec;
diff --git a/devtools/shared/specs/profiler.js b/devtools/shared/specs/profiler.js
new file mode 100644
index 000000000..a4a6f384e
--- /dev/null
+++ b/devtools/shared/specs/profiler.js
@@ -0,0 +1,121 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  Option,
+  RetVal,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol");
+
+types.addType("profiler-data", {
+  // On Fx42+, the profile is only deserialized on the front; older
+  // servers will get the profiler data as an object from nsIProfiler,
+  // causing one parse/stringify cycle, then again implicitly in a packet.
+  read: (v) => {
+    if (typeof v.profile === "string") {
+      // Create a new response object since `profile` is read only.
+      let newValue = Object.create(null);
+      newValue.profile = JSON.parse(v.profile);
+      newValue.currentTime = v.currentTime;
+      return newValue;
+    }
+    return v;
+  }
+});
+
+const profilerSpec = generateActorSpec({
+  typeName: "profiler",
+
+  /**
+   * The set of events the ProfilerActor emits over RDP.
+   */
+  events: {
+    "console-api-profiler": {
+      data: Arg(0, "json"),
+    },
+    "profiler-started": {
+      data: Arg(0, "json"),
+    },
+    "profiler-stopped": {
+      data: Arg(0, "json"),
+    },
+    "profiler-status": {
+      data: Arg(0, "json"),
+    },
+
+    // Only for older geckos, pre-protocol.js ProfilerActor (<Fx42).
+    // Emitted on other events as a transition from older profiler events
+    // to newer ones.
+    "eventNotification": {
+      subject: Option(0, "json"),
+      topic: Option(0, "string"),
+      details: Option(0, "json")
+    }
+  },
+
+  methods: {
+    startProfiler: {
+      // Write out every property in the request, since we want all these options to be
+      // on the packet's top-level for backwards compatibility, when the profiler actor
+      // was not using protocol.js (<Fx42)
+      request: {
+        entries: Option(0, "nullable:number"),
+        interval: Option(0, "nullable:number"),
+        features: Option(0, "nullable:array:string"),
+        threadFilters: Option(0, "nullable:array:string"),
+      },
+      response: RetVal("json"),
+    },
+    stopProfiler: {
+      response: RetVal("json"),
+    },
+    getProfile: {
+      request: {
+        startTime: Option(0, "nullable:number"),
+        stringify: Option(0, "nullable:boolean")
+      },
+      response: RetVal("profiler-data")
+    },
+    getFeatures: {
+      response: RetVal("json")
+    },
+    getBufferInfo: {
+      response: RetVal("json")
+    },
+    getStartOptions: {
+      response: RetVal("json")
+    },
+    isActive: {
+      response: RetVal("json")
+    },
+    getSharedLibraryInformation: {
+      response: RetVal("json")
+    },
+    registerEventNotifications: {
+      // Explicitly enumerate the arguments
+      // @see ProfilerActor#startProfiler
+      request: {
+        events: Option(0, "nullable:array:string"),
+      },
+      response: RetVal("json")
+    },
+    unregisterEventNotifications: {
+      // Explicitly enumerate the arguments
+      // @see ProfilerActor#startProfiler
+      request: {
+        events: Option(0, "nullable:array:string"),
+      },
+      response: RetVal("json")
+    },
+    setProfilerStatusInterval: {
+      request: { interval: Arg(0, "number") },
+      oneway: true
+    }
+  }
+});
+
+exports.profilerSpec = profilerSpec;
diff --git a/devtools/shared/specs/promises.js b/devtools/shared/specs/promises.js
new file mode 100644
index 000000000..ef57c3bae
--- /dev/null
+++ b/devtools/shared/specs/promises.js
@@ -0,0 +1,56 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  RetVal,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol");
+
+// Teach protocol.js how to deal with legacy actor types
+types.addType("ObjectActor", {
+  write: actor => actor.grip(),
+  read: grip => grip
+});
+
+const promisesSpec = generateActorSpec({
+  typeName: "promises",
+
+  events: {
+    // Event emitted for new promises allocated in debuggee and bufferred by
+    // sending the list of promise objects in a batch.
+    "new-promises": {
+      type: "new-promises",
+      data: Arg(0, "array:ObjectActor"),
+    },
+    // Event emitted for promise settlements.
+    "promises-settled": {
+      type: "promises-settled",
+      data: Arg(0, "array:ObjectActor")
+    }
+  },
+
+  methods: {
+    attach: {
+      request: {},
+      response: {},
+    },
+
+    detach: {
+      request: {},
+      response: {},
+    },
+
+    listPromises: {
+      request: {},
+      response: {
+        promises: RetVal("array:ObjectActor"),
+      },
+    }
+  }
+});
+
+exports.promisesSpec = promisesSpec;
diff --git a/devtools/shared/specs/reflow.js b/devtools/shared/specs/reflow.js
new file mode 100644
index 000000000..a33c7a2cf
--- /dev/null
+++ b/devtools/shared/specs/reflow.js
@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const {Arg, generateActorSpec} = require("devtools/shared/protocol");
+
+const reflowSpec = generateActorSpec({
+  typeName: "reflow",
+
+  events: {
+    /**
+     * The reflows event is emitted when reflows have been detected. The event
+     * is sent with an array of reflows that occured. Each item has the
+     * following properties:
+     * - start {Number}
+     * - end {Number}
+     * - isInterruptible {Boolean}
+     */
+    reflows: {
+      type: "reflows",
+      reflows: Arg(0, "array:json")
+    }
+  },
+
+  methods: {
+    start: {oneway: true},
+    stop: {oneway: true},
+  },
+});
+
+exports.reflowSpec = reflowSpec;
diff --git a/devtools/shared/specs/script.js b/devtools/shared/specs/script.js
new file mode 100644
index 000000000..f24426dee
--- /dev/null
+++ b/devtools/shared/specs/script.js
@@ -0,0 +1,14 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {generateActorSpec} = require("devtools/shared/protocol");
+
+const threadSpec = generateActorSpec({
+  typeName: "context",
+
+  methods: {},
+});
+
+exports.threadSpec = threadSpec;
diff --git a/devtools/shared/specs/settings.js b/devtools/shared/specs/settings.js
new file mode 100644
index 000000000..482c8f473
--- /dev/null
+++ b/devtools/shared/specs/settings.js
@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const settingsSpec = generateActorSpec({
+  typeName: "settings",
+
+  methods: {
+    getSetting: {
+      request: { value: Arg(0) },
+      response: { value: RetVal("json") }
+    },
+    setSetting: {
+      request: { name: Arg(0), value: Arg(1) },
+      response: {}
+    },
+    getAllSettings: {
+      request: {},
+      response: { value: RetVal("json") }
+    },
+    clearUserSetting: {
+      request: { name: Arg(0) },
+      response: {}
+    }
+  },
+});
+
+exports.settingsSpec = settingsSpec;
diff --git a/devtools/shared/specs/source.js b/devtools/shared/specs/source.js
new file mode 100644
index 000000000..66bcf89e2
--- /dev/null
+++ b/devtools/shared/specs/source.js
@@ -0,0 +1,40 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const sourceSpec = generateActorSpec({
+  typeName: "source",
+
+  methods: {
+    getExecutableLines: { response: { lines: RetVal("json") } },
+    onSource: {
+      request: { type: "source" },
+      response: RetVal("json")
+    },
+    prettyPrint: {
+      request: { indent: Arg(0, "number") },
+      response: RetVal("json")
+    },
+    disablePrettyPrint: {
+      response: RetVal("json")
+    },
+    blackbox: { response: { pausedInSource: RetVal("boolean") } },
+    unblackbox: {},
+    setBreakpoint: {
+      request: {
+        location: {
+          line: Arg(0, "number"),
+          column: Arg(1, "nullable:number")
+        },
+        condition: Arg(2, "nullable:string"),
+        noSliding: Arg(3, "nullable:boolean")
+      },
+      response: RetVal("json")
+    },
+  },
+});
+
+exports.sourceSpec = sourceSpec;
diff --git a/devtools/shared/specs/storage.js b/devtools/shared/specs/storage.js
new file mode 100644
index 000000000..d6ddaefe5
--- /dev/null
+++ b/devtools/shared/specs/storage.js
@@ -0,0 +1,279 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const protocol = require("devtools/shared/protocol");
+const { Arg, RetVal, types } = protocol;
+
+let childSpecs = {};
+
+function createStorageSpec(options) {
+  // common methods for all storage types
+  let methods = {
+    getStoreObjects: {
+      request: {
+        host: Arg(0),
+        names: Arg(1, "nullable:array:string"),
+        options: Arg(2, "nullable:json")
+      },
+      response: RetVal(options.storeObjectType)
+    },
+    getFields: {
+      request: {
+        subType: Arg(0, "nullable:string")
+      },
+      response: {
+        value: RetVal("json")
+      }
+    }
+  };
+
+  // extra methods specific for storage type
+  Object.assign(methods, options.methods);
+
+  childSpecs[options.typeName] = protocol.generateActorSpec({
+    typeName: options.typeName,
+    methods
+  });
+}
+
+// Cookies store object
+types.addDictType("cookieobject", {
+  name: "string",
+  value: "longstring",
+  path: "nullable:string",
+  host: "string",
+  isDomain: "boolean",
+  isSecure: "boolean",
+  isHttpOnly: "boolean",
+  creationTime: "number",
+  lastAccessed: "number",
+  expires: "number"
+});
+
+// Array of cookie store objects
+types.addDictType("cookiestoreobject", {
+  total: "number",
+  offset: "number",
+  data: "array:nullable:cookieobject"
+});
+
+// Common methods for edit/remove
+const editRemoveMethods = {
+  getEditableFields: {
+    request: {},
+    response: {
+      value: RetVal("json")
+    }
+  },
+  editItem: {
+    request: {
+      data: Arg(0, "json"),
+    },
+    response: {}
+  },
+  removeItem: {
+    request: {
+      host: Arg(0, "string"),
+      name: Arg(1, "string"),
+    },
+    response: {}
+  },
+};
+
+// Cookies actor spec
+createStorageSpec({
+  typeName: "cookies",
+  storeObjectType: "cookiestoreobject",
+  methods: Object.assign({},
+    editRemoveMethods,
+    {
+      removeAll: {
+        request: {
+          host: Arg(0, "string"),
+          domain: Arg(1, "nullable:string")
+        },
+        response: {}
+      }
+    }
+  )
+});
+
+// Local Storage / Session Storage store object
+types.addDictType("storageobject", {
+  name: "string",
+  value: "longstring"
+});
+
+// Common methods for local/session storage
+const storageMethods = Object.assign({},
+  editRemoveMethods,
+  {
+    removeAll: {
+      request: {
+        host: Arg(0, "string")
+      },
+      response: {}
+    }
+  }
+);
+
+// Array of Local Storage / Session Storage store objects
+types.addDictType("storagestoreobject", {
+  total: "number",
+  offset: "number",
+  data: "array:nullable:storageobject"
+});
+
+createStorageSpec({
+  typeName: "localStorage",
+  storeObjectType: "storagestoreobject",
+  methods: storageMethods
+});
+
+createStorageSpec({
+  typeName: "sessionStorage",
+  storeObjectType: "storagestoreobject",
+  methods: storageMethods
+});
+
+types.addDictType("cacheobject", {
+  "url": "string",
+  "status": "string"
+});
+
+// Array of Cache store objects
+types.addDictType("cachestoreobject", {
+  total: "number",
+  offset: "number",
+  data: "array:nullable:cacheobject"
+});
+
+// Cache storage spec
+createStorageSpec({
+  typeName: "Cache",
+  storeObjectType: "cachestoreobject",
+  methods: {
+    removeAll: {
+      request: {
+        host: Arg(0, "string"),
+        name: Arg(1, "string"),
+      },
+      response: {}
+    },
+    removeItem: {
+      request: {
+        host: Arg(0, "string"),
+        name: Arg(1, "string"),
+      },
+      response: {}
+    },
+  }
+});
+
+// Indexed DB store object
+// This is a union on idb object, db metadata object and object store metadata
+// object
+types.addDictType("idbobject", {
+  name: "nullable:string",
+  db: "nullable:string",
+  objectStore: "nullable:string",
+  origin: "nullable:string",
+  version: "nullable:number",
+  objectStores: "nullable:number",
+  keyPath: "nullable:string",
+  autoIncrement: "nullable:boolean",
+  indexes: "nullable:string",
+  value: "nullable:longstring"
+});
+
+// Array of Indexed DB store objects
+types.addDictType("idbstoreobject", {
+  total: "number",
+  offset: "number",
+  data: "array:nullable:idbobject"
+});
+
+// Result of Indexed DB delete operation: can block or throw error
+types.addDictType("idbdeleteresult", {
+  blocked: "nullable:boolean",
+  error: "nullable:string"
+});
+
+createStorageSpec({
+  typeName: "indexedDB",
+  storeObjectType: "idbstoreobject",
+  methods: {
+    removeDatabase: {
+      request: {
+        host: Arg(0, "string"),
+        name: Arg(1, "string"),
+      },
+      response: RetVal("idbdeleteresult")
+    },
+    removeAll: {
+      request: {
+        host: Arg(0, "string"),
+        name: Arg(1, "string"),
+      },
+      response: {}
+    },
+    removeItem: {
+      request: {
+        host: Arg(0, "string"),
+        name: Arg(1, "string"),
+      },
+      response: {}
+    },
+  }
+});
+
+// Update notification object
+types.addDictType("storeUpdateObject", {
+  changed: "nullable:json",
+  deleted: "nullable:json",
+  added: "nullable:json"
+});
+
+// Generate a type definition for an object with actors for all storage types.
+types.addDictType("storelist", Object.keys(childSpecs).reduce((obj, type) => {
+  obj[type] = type;
+  return obj;
+}, {}));
+
+exports.childSpecs = childSpecs;
+
+exports.storageSpec = protocol.generateActorSpec({
+  typeName: "storage",
+
+  /**
+   * List of event notifications that the server can send to the client.
+   *
+   *  - stores-update : When any store object in any storage type changes.
+   *  - stores-cleared : When all the store objects are removed.
+   *  - stores-reloaded : When all stores are reloaded. This generally mean that
+   *                      we should refetch everything again.
+   */
+  events: {
+    "stores-update": {
+      type: "storesUpdate",
+      data: Arg(0, "storeUpdateObject")
+    },
+    "stores-cleared": {
+      type: "storesCleared",
+      data: Arg(0, "json")
+    },
+    "stores-reloaded": {
+      type: "storesReloaded",
+      data: Arg(0, "json")
+    }
+  },
+
+  methods: {
+    listStores: {
+      request: {},
+      response: RetVal("storelist")
+    },
+  }
+});
diff --git a/devtools/shared/specs/string.js b/devtools/shared/specs/string.js
new file mode 100644
index 000000000..f759d4052
--- /dev/null
+++ b/devtools/shared/specs/string.js
@@ -0,0 +1,87 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const protocol = require("devtools/shared/protocol");
+const {Arg, RetVal, generateActorSpec} = protocol;
+const promise = require("promise");
+const {Class} = require("sdk/core/heritage");
+
+const longStringSpec = generateActorSpec({
+  typeName: "longstractor",
+
+  methods: {
+    substring: {
+      request: {
+        start: Arg(0),
+        end: Arg(1)
+      },
+      response: { substring: RetVal() },
+    },
+    release: { release: true },
+  },
+});
+
+exports.longStringSpec = longStringSpec;
+
+/**
+ * When a caller is expecting a LongString actor but the string is already available on
+ * client, the SimpleStringFront can be used as it shares the same API as a
+ * LongStringFront but will not make unnecessary trips to the server.
+ */
+const SimpleStringFront = Class({
+  initialize: function (str) {
+    this.str = str;
+  },
+
+  get length() {
+    return this.str.length;
+  },
+
+  get initial() {
+    return this.str;
+  },
+
+  string: function () {
+    return promise.resolve(this.str);
+  },
+
+  substring: function (start, end) {
+    return promise.resolve(this.str.substring(start, end));
+  },
+
+  release: function () {
+    this.str = null;
+    return promise.resolve(undefined);
+  }
+});
+
+exports.SimpleStringFront = SimpleStringFront;
+
+// The long string actor needs some custom marshalling, because it is sometimes
+// returned as a primitive rather than a complete form.
+
+var stringActorType = protocol.types.getType("longstractor");
+protocol.types.addType("longstring", {
+  _actor: true,
+  write: (value, context, detail) => {
+    if (!(context instanceof protocol.Actor)) {
+      throw Error("Passing a longstring as an argument isn't supported.");
+    }
+
+    if (value.short) {
+      return value.str;
+    }
+    return stringActorType.write(value, context, detail);
+  },
+  read: (value, context, detail) => {
+    if (context instanceof protocol.Actor) {
+      throw Error("Passing a longstring as an argument isn't supported.");
+    }
+    if (typeof (value) === "string") {
+      return new SimpleStringFront(value);
+    }
+    return stringActorType.read(value, context, detail);
+  }
+});
diff --git a/devtools/shared/specs/styleeditor.js b/devtools/shared/specs/styleeditor.js
new file mode 100644
index 000000000..e93b7e56f
--- /dev/null
+++ b/devtools/shared/specs/styleeditor.js
@@ -0,0 +1,61 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const { Arg, RetVal, generateActorSpec } = require("devtools/shared/protocol");
+
+const oldStyleSheetSpec = generateActorSpec({
+  typeName: "old-stylesheet",
+
+  events: {
+    "property-change": {
+      type: "propertyChange",
+      property: Arg(0, "string"),
+      value: Arg(1, "json")
+    },
+    "source-load": {
+      type: "sourceLoad",
+      source: Arg(0, "string")
+    },
+    "style-applied": {
+      type: "styleApplied"
+    }
+  },
+
+  methods: {
+    toggleDisabled: {
+      response: { disabled: RetVal("boolean")}
+    },
+    fetchSource: {},
+    update: {
+      request: {
+        text: Arg(0, "string"),
+        transition: Arg(1, "boolean")
+      }
+    }
+  }
+});
+
+exports.oldStyleSheetSpec = oldStyleSheetSpec;
+
+const styleEditorSpec = generateActorSpec({
+  typeName: "styleeditor",
+
+  events: {
+    "document-load": {
+      type: "documentLoad",
+      styleSheets: Arg(0, "array:old-stylesheet")
+    }
+  },
+
+  method: {
+    newDocument: {},
+    newStyleSheet: {
+      request: { text: Arg(0, "string") },
+      response: { styleSheet: RetVal("old-stylesheet") }
+    }
+  }
+});
+
+exports.styleEditorSpec = styleEditorSpec;
diff --git a/devtools/shared/specs/styles.js b/devtools/shared/specs/styles.js
new file mode 100644
index 000000000..225d712a4
--- /dev/null
+++ b/devtools/shared/specs/styles.js
@@ -0,0 +1,206 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  Option,
+  RetVal,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol");
+require("devtools/shared/specs/node");
+require("devtools/shared/specs/stylesheets");
+
+// Predeclare the domstylerule actor type
+types.addActorType("domstylerule");
+
+/**
+ * DOM Nodes returned by the style actor will be owned by the DOM walker
+ * for the connection.
+  */
+types.addLifetime("walker", "walker");
+
+/**
+ * When asking for the styles applied to a node, we return a list of
+ * appliedstyle json objects that lists the rules that apply to the node
+ * and which element they were inherited from (if any).
+ *
+ * Note appliedstyle only sends the list of actorIDs and is not a valid return
+ * value on its own. appliedstyle should be returned with the actual list of
+ * StyleRuleActor and StyleSheetActor. See appliedStylesReturn.
+ */
+types.addDictType("appliedstyle", {
+  rule: "domstylerule#actorid",
+  inherited: "nullable:domnode#actorid",
+  keyframes: "nullable:domstylerule#actorid"
+});
+
+types.addDictType("matchedselector", {
+  rule: "domstylerule#actorid",
+  selector: "string",
+  value: "string",
+  status: "number"
+});
+
+types.addDictType("appliedStylesReturn", {
+  entries: "array:appliedstyle",
+  rules: "array:domstylerule",
+  sheets: "array:stylesheet"
+});
+
+types.addDictType("modifiedStylesReturn", {
+  isMatching: RetVal("boolean"),
+  ruleProps: RetVal("nullable:appliedStylesReturn")
+});
+
+types.addDictType("fontpreview", {
+  data: "nullable:longstring",
+  size: "json"
+});
+
+types.addDictType("fontface", {
+  name: "string",
+  CSSFamilyName: "string",
+  rule: "nullable:domstylerule",
+  srcIndex: "number",
+  URI: "string",
+  format: "string",
+  preview: "nullable:fontpreview",
+  localName: "string",
+  metadata: "string"
+});
+
+const pageStyleSpec = generateActorSpec({
+  typeName: "pagestyle",
+
+  events: {
+    "stylesheet-updated": {
+      type: "styleSheetUpdated",
+      styleSheet: Arg(0, "stylesheet")
+    }
+  },
+
+  methods: {
+    getComputed: {
+      request: {
+        node: Arg(0, "domnode"),
+        markMatched: Option(1, "boolean"),
+        onlyMatched: Option(1, "boolean"),
+        filter: Option(1, "string"),
+      },
+      response: {
+        computed: RetVal("json")
+      }
+    },
+    getAllUsedFontFaces: {
+      request: {
+        includePreviews: Option(0, "boolean"),
+        previewText: Option(0, "string"),
+        previewFontSize: Option(0, "string"),
+        previewFillStyle: Option(0, "string")
+      },
+      response: {
+        fontFaces: RetVal("array:fontface")
+      }
+    },
+    getUsedFontFaces: {
+      request: {
+        node: Arg(0, "domnode"),
+        includePreviews: Option(1, "boolean"),
+        previewText: Option(1, "string"),
+        previewFontSize: Option(1, "string"),
+        previewFillStyle: Option(1, "string")
+      },
+      response: {
+        fontFaces: RetVal("array:fontface")
+      }
+    },
+    getMatchedSelectors: {
+      request: {
+        node: Arg(0, "domnode"),
+        property: Arg(1, "string"),
+        filter: Option(2, "string")
+      },
+      response: RetVal(types.addDictType("matchedselectorresponse", {
+        rules: "array:domstylerule",
+        sheets: "array:stylesheet",
+        matched: "array:matchedselector"
+      }))
+    },
+    getApplied: {
+      request: {
+        node: Arg(0, "domnode"),
+        inherited: Option(1, "boolean"),
+        matchedSelectors: Option(1, "boolean"),
+        filter: Option(1, "string")
+      },
+      response: RetVal("appliedStylesReturn")
+    },
+    isPositionEditable: {
+      request: { node: Arg(0, "domnode")},
+      response: { value: RetVal("boolean") }
+    },
+    getLayout: {
+      request: {
+        node: Arg(0, "domnode"),
+        autoMargins: Option(1, "boolean")
+      },
+      response: RetVal("json")
+    },
+    addNewRule: {
+      request: {
+        node: Arg(0, "domnode"),
+        pseudoClasses: Arg(1, "nullable:array:string"),
+        editAuthored: Arg(2, "boolean")
+      },
+      response: RetVal("appliedStylesReturn")
+    }
+  }
+});
+
+exports.pageStyleSpec = pageStyleSpec;
+
+const styleRuleSpec = generateActorSpec({
+  typeName: "domstylerule",
+
+  events: {
+    "location-changed": {
+      type: "locationChanged",
+      line: Arg(0, "number"),
+      column: Arg(1, "number")
+    },
+  },
+
+  methods: {
+    setRuleText: {
+      request: { modification: Arg(0, "string") },
+      response: { rule: RetVal("domstylerule") }
+    },
+    modifyProperties: {
+      request: { modifications: Arg(0, "array:json") },
+      response: { rule: RetVal("domstylerule") }
+    },
+    modifySelector: {
+      request: { selector: Arg(0, "string") },
+      response: { isModified: RetVal("boolean") },
+    },
+    modifySelector2: {
+      request: {
+        node: Arg(0, "domnode"),
+        value: Arg(1, "string"),
+        editAuthored: Arg(2, "boolean")
+      },
+      response: RetVal("modifiedStylesReturn")
+    }
+  }
+});
+
+exports.styleRuleSpec = styleRuleSpec;
+
+// The PageStyle actor flattens the DOM CSS objects a little bit, merging
+// Rules and their Styles into one actor.  For elements (which have a style
+// but no associated rule) we fake a rule with the following style id.
+const ELEMENT_STYLE = 100;
+exports.ELEMENT_STYLE = ELEMENT_STYLE;
diff --git a/devtools/shared/specs/stylesheets.js b/devtools/shared/specs/stylesheets.js
new file mode 100644
index 000000000..c89a7c088
--- /dev/null
+++ b/devtools/shared/specs/stylesheets.js
@@ -0,0 +1,120 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  RetVal,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol");
+
+const originalSourceSpec = generateActorSpec({
+  typeName: "originalsource",
+
+  methods: {
+    getText: {
+      response: {
+        text: RetVal("longstring")
+      }
+    }
+  }
+});
+
+exports.originalSourceSpec = originalSourceSpec;
+
+const mediaRuleSpec = generateActorSpec({
+  typeName: "mediarule",
+
+  events: {
+    "matches-change": {
+      type: "matchesChange",
+      matches: Arg(0, "boolean"),
+    }
+  }
+});
+
+exports.mediaRuleSpec = mediaRuleSpec;
+
+types.addActorType("stylesheet");
+
+const styleSheetSpec = generateActorSpec({
+  typeName: "stylesheet",
+
+  events: {
+    "property-change": {
+      type: "propertyChange",
+      property: Arg(0, "string"),
+      value: Arg(1, "json")
+    },
+    "style-applied": {
+      type: "styleApplied",
+      kind: Arg(0, "number"),
+      styleSheet: Arg(1, "stylesheet")
+    },
+    "media-rules-changed": {
+      type: "mediaRulesChanged",
+      rules: Arg(0, "array:mediarule")
+    }
+  },
+
+  methods: {
+    toggleDisabled: {
+      response: { disabled: RetVal("boolean")}
+    },
+    getText: {
+      response: {
+        text: RetVal("longstring")
+      }
+    },
+    getOriginalSources: {
+      request: {},
+      response: {
+        originalSources: RetVal("nullable:array:originalsource")
+      }
+    },
+    getOriginalLocation: {
+      request: {
+        line: Arg(0, "number"),
+        column: Arg(1, "number")
+      },
+      response: RetVal(types.addDictType("originallocationresponse", {
+        source: "string",
+        line: "number",
+        column: "number"
+      }))
+    },
+    getMediaRules: {
+      request: {},
+      response: {
+        mediaRules: RetVal("nullable:array:mediarule")
+      }
+    },
+    update: {
+      request: {
+        text: Arg(0, "string"),
+        transition: Arg(1, "boolean")
+      }
+    }
+  }
+});
+
+exports.styleSheetSpec = styleSheetSpec;
+
+const styleSheetsSpec = generateActorSpec({
+  typeName: "stylesheets",
+
+  methods: {
+    getStyleSheets: {
+      request: {},
+      response: { styleSheets: RetVal("array:stylesheet") }
+    },
+    addStyleSheet: {
+      request: { text: Arg(0, "string") },
+      response: { styleSheet: RetVal("stylesheet") }
+    }
+  }
+});
+
+exports.styleSheetsSpec = styleSheetsSpec;
diff --git a/devtools/shared/specs/timeline.js b/devtools/shared/specs/timeline.js
new file mode 100644
index 000000000..653ebef49
--- /dev/null
+++ b/devtools/shared/specs/timeline.js
@@ -0,0 +1,118 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  RetVal,
+  Option,
+  generateActorSpec,
+  types
+} = require("devtools/shared/protocol");
+
+/**
+ * Type representing an array of numbers as strings, serialized fast(er).
+ * http://jsperf.com/json-stringify-parse-vs-array-join-split/3
+ *
+ * XXX: It would be nice if on local connections (only), we could just *give*
+ * the array directly to the front, instead of going through all this
+ * serialization redundancy.
+ */
+types.addType("array-of-numbers-as-strings", {
+  write: (v) => v.join(","),
+  // In Gecko <= 37, `v` is an array; do not transform in this case.
+  read: (v) => typeof v === "string" ? v.split(",") : v
+});
+
+const timelineSpec = generateActorSpec({
+  typeName: "timeline",
+
+  events: {
+    /**
+     * Events emitted when "DOMContentLoaded" and "Load" markers are received.
+     */
+    "doc-loading": {
+      type: "doc-loading",
+      marker: Arg(0, "json"),
+      endTime: Arg(0, "number")
+    },
+
+    /**
+     * The "markers" events emitted every DEFAULT_TIMELINE_DATA_PULL_TIMEOUT ms
+     * at most, when profile markers are found. The timestamps on each marker
+     * are relative to when recording was started.
+     */
+    "markers": {
+      type: "markers",
+      markers: Arg(0, "json"),
+      endTime: Arg(1, "number")
+    },
+
+    /**
+     * The "memory" events emitted in tandem with "markers", if this was enabled
+     * when the recording started. The `delta` timestamp on this measurement is
+     * relative to when recording was started.
+     */
+    "memory": {
+      type: "memory",
+      delta: Arg(0, "number"),
+      measurement: Arg(1, "json")
+    },
+
+    /**
+     * The "ticks" events (from the refresh driver) emitted in tandem with
+     * "markers", if this was enabled when the recording started. All ticks
+     * are timestamps with a zero epoch.
+     */
+    "ticks": {
+      type: "ticks",
+      delta: Arg(0, "number"),
+      timestamps: Arg(1, "array-of-numbers-as-strings")
+    },
+
+    /**
+     * The "frames" events emitted in tandem with "markers", containing
+     * JS stack frames. The `delta` timestamp on this frames packet is
+     * relative to when recording was started.
+     */
+    "frames": {
+      type: "frames",
+      delta: Arg(0, "number"),
+      frames: Arg(1, "json")
+    }
+  },
+
+  methods: {
+    isRecording: {
+      request: {},
+      response: {
+        value: RetVal("boolean")
+      }
+    },
+
+    start: {
+      request: {
+        withMarkers: Option(0, "boolean"),
+        withTicks: Option(0, "boolean"),
+        withMemory: Option(0, "boolean"),
+        withFrames: Option(0, "boolean"),
+        withGCEvents: Option(0, "boolean"),
+        withDocLoadingEvents: Option(0, "boolean")
+      },
+      response: {
+        value: RetVal("number")
+      }
+    },
+
+    stop: {
+      response: {
+        // Set as possibly nullable due to the end time possibly being
+        // undefined during destruction
+        value: RetVal("nullable:number")
+      }
+    },
+  },
+});
+
+exports.timelineSpec = timelineSpec;
diff --git a/devtools/shared/specs/webaudio.js b/devtools/shared/specs/webaudio.js
new file mode 100644
index 000000000..9dfb92467
--- /dev/null
+++ b/devtools/shared/specs/webaudio.js
@@ -0,0 +1,163 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  Arg,
+  Option,
+  RetVal,
+  generateActorSpec,
+  types,
+} = require("devtools/shared/protocol");
+
+exports.NODE_CREATION_METHODS = [
+  "createBufferSource", "createMediaElementSource", "createMediaStreamSource",
+  "createMediaStreamDestination", "createScriptProcessor", "createAnalyser",
+  "createGain", "createDelay", "createBiquadFilter", "createWaveShaper",
+  "createPanner", "createConvolver", "createChannelSplitter", "createChannelMerger",
+  "createDynamicsCompressor", "createOscillator", "createStereoPanner"
+];
+
+exports.AUTOMATION_METHODS = [
+  "setValueAtTime", "linearRampToValueAtTime", "exponentialRampToValueAtTime",
+  "setTargetAtTime", "setValueCurveAtTime", "cancelScheduledValues"
+];
+
+exports.NODE_ROUTING_METHODS = [
+  "connect", "disconnect"
+];
+
+types.addActorType("audionode");
+const audionodeSpec = generateActorSpec({
+  typeName: "audionode",
+
+  methods: {
+    getType: { response: { type: RetVal("string") }},
+    isBypassed: {
+      response: { bypassed: RetVal("boolean") }
+    },
+    bypass: {
+      request: { enable: Arg(0, "boolean") },
+      response: { bypassed: RetVal("boolean") }
+    },
+    setParam: {
+      request: {
+        param: Arg(0, "string"),
+        value: Arg(1, "nullable:primitive")
+      },
+      response: { error: RetVal("nullable:json") }
+    },
+    getParam: {
+      request: {
+        param: Arg(0, "string")
+      },
+      response: { text: RetVal("nullable:primitive") }
+    },
+    getParamFlags: {
+      request: { param: Arg(0, "string") },
+      response: { flags: RetVal("nullable:primitive") }
+    },
+    getParams: {
+      response: { params: RetVal("json") }
+    },
+    connectParam: {
+      request: {
+        destActor: Arg(0, "audionode"),
+        paramName: Arg(1, "string"),
+        output: Arg(2, "nullable:number")
+      },
+      response: { error: RetVal("nullable:json") }
+    },
+    connectNode: {
+      request: {
+        destActor: Arg(0, "audionode"),
+        output: Arg(1, "nullable:number"),
+        input: Arg(2, "nullable:number")
+      },
+      response: { error: RetVal("nullable:json") }
+    },
+    disconnect: {
+      request: { output: Arg(0, "nullable:number") },
+      response: { error: RetVal("nullable:json") }
+    },
+    getAutomationData: {
+      request: { paramName: Arg(0, "string") },
+      response: { values: RetVal("nullable:json") }
+    },
+    addAutomationEvent: {
+      request: {
+        paramName: Arg(0, "string"),
+        eventName: Arg(1, "string"),
+        args: Arg(2, "nullable:json")
+      },
+      response: { error: RetVal("nullable:json") }
+    },
+  }
+});
+
+exports.audionodeSpec = audionodeSpec;
+
+const webAudioSpec = generateActorSpec({
+  typeName: "webaudio",
+
+  /**
+   * Events emitted by this actor.
+   */
+  events: {
+    "start-context": {
+      type: "startContext"
+    },
+    "connect-node": {
+      type: "connectNode",
+      source: Option(0, "audionode"),
+      dest: Option(0, "audionode")
+    },
+    "disconnect-node": {
+      type: "disconnectNode",
+      source: Arg(0, "audionode")
+    },
+    "connect-param": {
+      type: "connectParam",
+      source: Option(0, "audionode"),
+      dest: Option(0, "audionode"),
+      param: Option(0, "string")
+    },
+    "change-param": {
+      type: "changeParam",
+      source: Option(0, "audionode"),
+      param: Option(0, "string"),
+      value: Option(0, "string")
+    },
+    "create-node": {
+      type: "createNode",
+      source: Arg(0, "audionode")
+    },
+    "destroy-node": {
+      type: "destroyNode",
+      source: Arg(0, "audionode")
+    },
+    "automation-event": {
+      type: "automationEvent",
+      node: Option(0, "audionode"),
+      paramName: Option(0, "string"),
+      eventName: Option(0, "string"),
+      args: Option(0, "json")
+    }
+  },
+
+  methods: {
+    getDefinition: {
+      response: { definition: RetVal("json") }
+    },
+    setup: {
+      request: { reload: Option(0, "boolean") },
+      oneway: true
+    },
+    finalize: {
+      oneway: true
+    }
+  }
+});
+
+exports.webAudioSpec = webAudioSpec;
diff --git a/devtools/shared/specs/webgl.js b/devtools/shared/specs/webgl.js
new file mode 100644
index 000000000..f97610f3c
--- /dev/null
+++ b/devtools/shared/specs/webgl.js
@@ -0,0 +1,101 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, Option, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const shaderSpec = generateActorSpec({
+  typeName: "gl-shader",
+
+  methods: {
+    getText: {
+      response: { text: RetVal("string") }
+    },
+    compile: {
+      request: { text: Arg(0, "string") },
+      response: { error: RetVal("nullable:json") }
+    },
+  },
+});
+
+exports.shaderSpec = shaderSpec;
+
+const programSpec = generateActorSpec({
+  typeName: "gl-program",
+
+  methods: {
+    getVertexShader: {
+      response: { shader: RetVal("gl-shader") }
+    },
+    getFragmentShader: {
+      response: { shader: RetVal("gl-shader") }
+    },
+    highlight: {
+      request: { tint: Arg(0, "array:number") },
+      oneway: true
+    },
+    unhighlight: {
+      oneway: true
+    },
+    blackbox: {
+      oneway: true
+    },
+    unblackbox: {
+      oneway: true
+    },
+  }
+});
+
+exports.programSpec = programSpec;
+
+const webGLSpec = generateActorSpec({
+  typeName: "webgl",
+
+  /**
+   * Events emitted by this actor. The "program-linked" event is fired every
+   * time a WebGL program was linked with its respective two shaders.
+   */
+  events: {
+    "program-linked": {
+      type: "programLinked",
+      program: Arg(0, "gl-program")
+    },
+    "global-destroyed": {
+      type: "globalDestroyed",
+      program: Arg(0, "number")
+    },
+    "global-created": {
+      type: "globalCreated",
+      program: Arg(0, "number")
+    }
+  },
+
+  methods: {
+    setup: {
+      request: { reload: Option(0, "boolean") },
+      oneway: true
+    },
+    finalize: {
+      oneway: true
+    },
+    getPrograms: {
+      response: { programs: RetVal("array:gl-program") }
+    },
+    waitForFrame: {
+      response: { success: RetVal("nullable:json") }
+    },
+    getPixel: {
+      request: {
+        selector: Option(0, "string"),
+        position: Option(0, "json")
+      },
+      response: { pixels: RetVal("json") }
+    },
+    _getAllPrograms: {
+      response: { programs: RetVal("array:gl-program") }
+    }
+  }
+});
+
+exports.webGLSpec = webGLSpec;
diff --git a/devtools/shared/specs/worker.js b/devtools/shared/specs/worker.js
new file mode 100644
index 000000000..568f55ec0
--- /dev/null
+++ b/devtools/shared/specs/worker.js
@@ -0,0 +1,78 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {Arg, RetVal, generateActorSpec} = require("devtools/shared/protocol");
+
+const workerSpec = generateActorSpec({
+  typeName: "worker",
+
+  methods: {
+    attach: {
+      request: {},
+      response: RetVal("json")
+    },
+    detach: {
+      request: {},
+      response: RetVal("json")
+    },
+    connect: {
+      request: {
+        options: Arg(0, "json"),
+      },
+      response: RetVal("json")
+    },
+    push: {
+      request: {},
+      response: RetVal("json")
+    },
+  },
+});
+
+exports.workerSpec = workerSpec;
+
+const pushSubscriptionSpec = generateActorSpec({
+  typeName: "pushSubscription",
+});
+
+exports.pushSubscriptionSpec = pushSubscriptionSpec;
+
+const serviceWorkerRegistrationSpec = generateActorSpec({
+  typeName: "serviceWorkerRegistration",
+
+  events: {
+    "push-subscription-modified": {
+      type: "push-subscription-modified"
+    },
+    "registration-changed": {
+      type: "registration-changed"
+    }
+  },
+
+  methods: {
+    start: {
+      request: {},
+      response: RetVal("json")
+    },
+    unregister: {
+      request: {},
+      response: RetVal("json")
+    },
+    getPushSubscription: {
+      request: {},
+      response: {
+        subscription: RetVal("nullable:pushSubscription")
+      }
+    },
+  },
+});
+
+exports.serviceWorkerRegistrationSpec = serviceWorkerRegistrationSpec;
+
+const serviceWorkerSpec = generateActorSpec({
+  typeName: "serviceWorker",
+});
+
+exports.serviceWorkerSpec = serviceWorkerSpec;
+