1 files changed, 84 insertions, 0 deletions
diff --git a/toolkit/content/process-content.js b/toolkit/content/process-content.js
new file mode 100644
index 000000000..2ff8f908a
--- /dev/null
+++ b/toolkit/content/process-content.js
@@ -0,0 +1,84 @@
+/* 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";
+
+var { classes: Cc, interfaces: Ci, utils: Cu } = Components;
+
+// Creates a new PageListener for this process. This will listen for page loads
+// and for those that match URLs provided by the parent process will set up
+// a dedicated message port and notify the parent process.
+Cu.import("resource://gre/modules/RemotePageManager.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+const gInContentProcess = Services.appinfo.processType == Ci.nsIXULRuntime.PROCESS_TYPE_CONTENT;
+
+Services.cpmm.addMessageListener("gmp-plugin-crash", msg => {
+  let gmpservice = Cc["@mozilla.org/gecko-media-plugin-service;1"]
+                     .getService(Ci.mozIGeckoMediaPluginService);
+
+  gmpservice.RunPluginCrashCallbacks(msg.data.pluginID, msg.data.pluginName);
+});
+
+if (gInContentProcess) {
+  let ProcessObserver = {
+    TOPICS: [
+      "inner-window-destroyed",
+      "xpcom-shutdown",
+    ],
+
+    init() {
+      for (let topic of this.TOPICS) {
+        Services.obs.addObserver(this, topic, false);
+        Services.cpmm.addMessageListener("Memory:GetSummary", this);
+      }
+    },
+
+    uninit() {
+      for (let topic of this.TOPICS) {
+        Services.obs.removeObserver(this, topic);
+        Services.cpmm.removeMessageListener("Memory:GetSummary", this);
+      }
+    },
+
+    receiveMessage(msg) {
+      if (msg.name != "Memory:GetSummary") {
+        return;
+      }
+      let pid = Services.appinfo.processID;
+      let memMgr = Cc["@mozilla.org/memory-reporter-manager;1"]
+                     .getService(Ci.nsIMemoryReporterManager);
+      let rss = memMgr.resident;
+      let uss = memMgr.residentUnique;
+      Services.cpmm.sendAsyncMessage("Memory:Summary", {
+        pid,
+        summary: {
+          uss,
+          rss,
+        }
+      });
+    },
+
+    observe(subject, topic, data) {
+      switch (topic) {
+        case "inner-window-destroyed": {
+          // Forward inner-window-destroyed notifications with the
+          // inner window ID, so that code in the parent that should
+          // do something when content windows go away can do it
+          let innerWindowID =
+            subject.QueryInterface(Ci.nsISupportsPRUint64).data;
+          Services.cpmm.sendAsyncMessage("Toolkit:inner-window-destroyed",
+                                         innerWindowID);
+          break;
+        }
+        case "xpcom-shutdown": {
+          this.uninit();
+          break;
+        }
+      }
+    },
+  };
+
+  ProcessObserver.init();
+}