Revert "Add Basilisk"

This reverts commit e72ef92b5bdc43cd2584198e2e54e951b70299e8.

1 files changed, 0 insertions, 1448 deletions

diff --git a/application/basilisk/base/content/content.js b/application/basilisk/base/content/content.js
deleted file mode 100644
index 54011a704..000000000
--- a/application/basilisk/base/content/content.js
+++ /dev/null
@@ -1,1448 +0,0 @@
-/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
-/* 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/. */
-
-/* This content script should work in any browser or iframe and should not
- * depend on the frame being contained in tabbrowser. */
-
-var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
-
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource:///modules/ContentWebRTC.jsm");
-Cu.import("resource:///modules/ContentObservers.jsm");
-Cu.import("resource://gre/modules/InlineSpellChecker.jsm");
-Cu.import("resource://gre/modules/InlineSpellCheckerContent.jsm");
-Cu.import("resource://gre/modules/Task.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "E10SUtils",
-  "resource:///modules/E10SUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
-  "resource://gre/modules/BrowserUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "ContentLinkHandler",
-  "resource:///modules/ContentLinkHandler.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "LoginManagerContent",
-  "resource://gre/modules/LoginManagerContent.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "LoginFormFactory",
-  "resource://gre/modules/LoginManagerContent.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "InsecurePasswordUtils",
-  "resource://gre/modules/InsecurePasswordUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PluginContent",
-  "resource:///modules/PluginContent.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
-  "resource://gre/modules/PrivateBrowsingUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "FormSubmitObserver",
-  "resource:///modules/FormSubmitObserver.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PageMetadata",
-  "resource://gre/modules/PageMetadata.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PlacesUIUtils",
-  "resource:///modules/PlacesUIUtils.jsm");
-XPCOMUtils.defineLazyGetter(this, "PageMenuChild", function() {
-  let tmp = {};
-  Cu.import("resource://gre/modules/PageMenu.jsm", tmp);
-  return new tmp.PageMenuChild();
-});
-XPCOMUtils.defineLazyModuleGetter(this, "Feeds",
-  "resource:///modules/Feeds.jsm");
-
-Cu.importGlobalProperties(["URL"]);
-
-// TabChildGlobal
-var global = this;
-
-// Load the form validation popup handler
-var formSubmitObserver = new FormSubmitObserver(content, this);
-
-addMessageListener("ContextMenu:DoCustomCommand", function(message) {
-  E10SUtils.wrapHandlingUserInput(
-    content, message.data.handlingUserInput,
-    () => PageMenuChild.executeMenu(message.data.generatedItemId));
-});
-
-addMessageListener("RemoteLogins:fillForm", function(message) {
-  LoginManagerContent.receiveMessage(message, content);
-});
-addEventListener("DOMFormHasPassword", function(event) {
-  LoginManagerContent.onDOMFormHasPassword(event, content);
-  let formLike = LoginFormFactory.createFromForm(event.target);
-  InsecurePasswordUtils.reportInsecurePasswords(formLike);
-});
-addEventListener("DOMInputPasswordAdded", function(event) {
-  LoginManagerContent.onDOMInputPasswordAdded(event, content);
-  let formLike = LoginFormFactory.createFromField(event.target);
-  InsecurePasswordUtils.reportInsecurePasswords(formLike);
-});
-addEventListener("pageshow", function(event) {
-  LoginManagerContent.onPageShow(event, content);
-});
-addEventListener("DOMAutoComplete", function(event) {
-  LoginManagerContent.onUsernameInput(event);
-});
-addEventListener("blur", function(event) {
-  LoginManagerContent.onUsernameInput(event);
-});
-
-var handleContentContextMenu = function(event) {
-  let defaultPrevented = event.defaultPrevented;
-  if (!Services.prefs.getBoolPref("dom.event.contextmenu.enabled")) {
-    let plugin = null;
-    try {
-      plugin = event.target.QueryInterface(Ci.nsIObjectLoadingContent);
-    } catch (e) {}
-    if (plugin && plugin.displayedType == Ci.nsIObjectLoadingContent.TYPE_PLUGIN) {
-      // Don't open a context menu for plugins.
-      return;
-    }
-
-    defaultPrevented = false;
-  }
-
-  if (defaultPrevented)
-    return;
-
-  let addonInfo = {};
-  let subject = {
-    event,
-    addonInfo,
-  };
-  subject.wrappedJSObject = subject;
-  Services.obs.notifyObservers(subject, "content-contextmenu", null);
-
-  let doc = event.target.ownerDocument;
-  let docLocation = doc.mozDocumentURIIfNotForErrorPages;
-  docLocation = docLocation && docLocation.spec;
-  let charSet = doc.characterSet;
-  let baseURI = doc.baseURI;
-  let referrer = doc.referrer;
-  let referrerPolicy = doc.referrerPolicy;
-  let frameOuterWindowID = doc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
-                                          .getInterface(Ci.nsIDOMWindowUtils)
-                                          .outerWindowID;
-  let loginFillInfo = LoginManagerContent.getFieldContext(event.target);
-
-  // The same-origin check will be done in nsContextMenu.openLinkInTab.
-  let parentAllowsMixedContent = !!docShell.mixedContentChannel;
-
-  // get referrer attribute from clicked link and parse it
-  // if per element referrer is enabled, the element referrer overrules
-  // the document wide referrer
-  if (Services.prefs.getBoolPref("network.http.enablePerElementReferrer")) {
-    let referrerAttrValue = Services.netUtils.parseAttributePolicyString(event.target.
-                            getAttribute("referrerpolicy"));
-    if (referrerAttrValue !== Ci.nsIHttpChannel.REFERRER_POLICY_UNSET) {
-      referrerPolicy = referrerAttrValue;
-    }
-  }
-
-  let disableSetDesktopBg = null;
-  // Media related cache info parent needs for saving
-  let contentType = null;
-  let contentDisposition = null;
-  if (event.target.nodeType == Ci.nsIDOMNode.ELEMENT_NODE &&
-      event.target instanceof Ci.nsIImageLoadingContent &&
-      event.target.currentURI) {
-    disableSetDesktopBg = disableSetDesktopBackground(event.target);
-
-    try {
-      let imageCache =
-        Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools)
-                                        .getImgCacheForDocument(doc);
-      let props =
-        imageCache.findEntryProperties(event.target.currentURI, doc);
-      try {
-        contentType = props.get("type", Ci.nsISupportsCString).data;
-      } catch (e) {}
-      try {
-        contentDisposition =
-          props.get("content-disposition", Ci.nsISupportsCString).data;
-      } catch (e) {}
-    } catch (e) {}
-  }
-
-  let selectionInfo = BrowserUtils.getSelectionDetails(content);
-
-  let loadContext = docShell.QueryInterface(Ci.nsILoadContext);
-  let userContextId = loadContext.originAttributes.userContextId;
-
-  if (Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_CONTENT) {
-    let editFlags = SpellCheckHelper.isEditable(event.target, content);
-    let spellInfo;
-    if (editFlags &
-        (SpellCheckHelper.EDITABLE | SpellCheckHelper.CONTENTEDITABLE)) {
-      spellInfo =
-        InlineSpellCheckerContent.initContextMenu(event, editFlags, this);
-    }
-
-    // Set the event target first as the copy image command needs it to
-    // determine what was context-clicked on. Then, update the state of the
-    // commands on the context menu.
-    docShell.contentViewer.QueryInterface(Ci.nsIContentViewerEdit)
-            .setCommandNode(event.target);
-    event.target.ownerGlobal.updateCommands("contentcontextmenu");
-
-    let customMenuItems = PageMenuChild.build(event.target);
-    let principal = doc.nodePrincipal;
-    sendRpcMessage("contextmenu",
-                   { editFlags, spellInfo, customMenuItems, addonInfo,
-                     principal, docLocation, charSet, baseURI, referrer,
-                     referrerPolicy, contentType, contentDisposition,
-                     frameOuterWindowID, selectionInfo, disableSetDesktopBg,
-                     loginFillInfo, parentAllowsMixedContent, userContextId },
-                   { event, popupNode: event.target });
-  } else {
-    // Break out to the parent window and pass the add-on info along
-    let browser = docShell.chromeEventHandler;
-    let mainWin = browser.ownerGlobal;
-    mainWin.gContextMenuContentData = {
-      isRemote: false,
-      event,
-      popupNode: event.target,
-      browser,
-      addonInfo,
-      documentURIObject: doc.documentURIObject,
-      docLocation,
-      charSet,
-      referrer,
-      referrerPolicy,
-      contentType,
-      contentDisposition,
-      selectionInfo,
-      disableSetDesktopBackground: disableSetDesktopBg,
-      loginFillInfo,
-      parentAllowsMixedContent,
-      userContextId,
-    };
-  }
-}
-
-Cc["@mozilla.org/eventlistenerservice;1"]
-  .getService(Ci.nsIEventListenerService)
-  .addSystemEventListener(global, "contextmenu", handleContentContextMenu, false);
-
-// Values for telemtery bins: see TLS_ERROR_REPORT_UI in Histograms.json
-const TLS_ERROR_REPORT_TELEMETRY_UI_SHOWN = 0;
-const TLS_ERROR_REPORT_TELEMETRY_EXPANDED = 1;
-const TLS_ERROR_REPORT_TELEMETRY_SUCCESS  = 6;
-const TLS_ERROR_REPORT_TELEMETRY_FAILURE  = 7;
-
-const SEC_ERROR_BASE          = Ci.nsINSSErrorsService.NSS_SEC_ERROR_BASE;
-const MOZILLA_PKIX_ERROR_BASE = Ci.nsINSSErrorsService.MOZILLA_PKIX_ERROR_BASE;
-
-const SEC_ERROR_EXPIRED_CERTIFICATE                = SEC_ERROR_BASE + 11;
-const SEC_ERROR_UNKNOWN_ISSUER                     = SEC_ERROR_BASE + 13;
-const SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE         = SEC_ERROR_BASE + 30;
-const SEC_ERROR_OCSP_FUTURE_RESPONSE               = SEC_ERROR_BASE + 131;
-const SEC_ERROR_OCSP_OLD_RESPONSE                  = SEC_ERROR_BASE + 132;
-const MOZILLA_PKIX_ERROR_NOT_YET_VALID_CERTIFICATE = MOZILLA_PKIX_ERROR_BASE + 5;
-const MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE = MOZILLA_PKIX_ERROR_BASE + 6;
-
-const PREF_BLOCKLIST_CLOCK_SKEW_SECONDS = "services.blocklist.clock_skew_seconds";
-
-const PREF_SSL_IMPACT_ROOTS = ["security.tls.version.", "security.ssl3."];
-
-const PREF_SSL_IMPACT = PREF_SSL_IMPACT_ROOTS.reduce((prefs, root) => {
-  return prefs.concat(Services.prefs.getChildList(root));
-}, []);
-
-
-function getSerializedSecurityInfo(docShell) {
-  let serhelper = Cc["@mozilla.org/network/serialization-helper;1"]
-                    .getService(Ci.nsISerializationHelper);
-
-  let securityInfo = docShell.failedChannel && docShell.failedChannel.securityInfo;
-  if (!securityInfo) {
-    return "";
-  }
-  securityInfo.QueryInterface(Ci.nsITransportSecurityInfo)
-              .QueryInterface(Ci.nsISerializable);
-
-  return serhelper.serializeToString(securityInfo);
-}
-
-var AboutNetAndCertErrorListener = {
-  init(chromeGlobal) {
-    addMessageListener("CertErrorDetails", this);
-    addMessageListener("Browser:CaptivePortalFreed", this);
-    chromeGlobal.addEventListener("AboutNetErrorLoad", this, false, true);
-    chromeGlobal.addEventListener("AboutNetErrorOpenCaptivePortal", this, false, true);
-    chromeGlobal.addEventListener("AboutNetErrorSetAutomatic", this, false, true);
-    chromeGlobal.addEventListener("AboutNetErrorOverride", this, false, true);
-    chromeGlobal.addEventListener("AboutNetErrorResetPreferences", this, false, true);
-  },
-
-  get isAboutNetError() {
-    return content.document.documentURI.startsWith("about:neterror");
-  },
-
-  get isAboutCertError() {
-    return content.document.documentURI.startsWith("about:certerror");
-  },
-
-  receiveMessage(msg) {
-    if (!this.isAboutCertError) {
-      return;
-    }
-
-    switch (msg.name) {
-      case "CertErrorDetails":
-        this.onCertErrorDetails(msg);
-        break;
-      case "Browser:CaptivePortalFreed":
-        this.onCaptivePortalFreed(msg);
-        break;
-    }
-  },
-
-  onCertErrorDetails(msg) {
-    let div = content.document.getElementById("certificateErrorText");
-    div.textContent = msg.data.info;
-    let learnMoreLink = content.document.getElementById("learnMoreLink");
-    let baseURL = Services.urlFormatter.formatURLPref("app.support.baseURL");
-
-    switch (msg.data.code) {
-      case SEC_ERROR_UNKNOWN_ISSUER:
-        learnMoreLink.href = baseURL + "security-error";
-        break;
-
-      // In case the certificate expired we make sure the system clock
-      // is not before the build date.
-      case SEC_ERROR_EXPIRED_CERTIFICATE:
-      case SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE:
-      case SEC_ERROR_OCSP_FUTURE_RESPONSE:
-      case SEC_ERROR_OCSP_OLD_RESPONSE:
-      case MOZILLA_PKIX_ERROR_NOT_YET_VALID_CERTIFICATE:
-      case MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE:
-
-        let appBuildID = Services.appinfo.appBuildID;
-
-        let year = parseInt(appBuildID.substr(0, 4), 10);
-        let month = parseInt(appBuildID.substr(4, 2), 10) - 1;
-        let day = parseInt(appBuildID.substr(6, 2), 10);
-
-        let buildDate = new Date(year, month, day);
-        let systemDate = new Date();
-
-        if (buildDate > systemDate) {
-          let formatter = new Intl.DateTimeFormat();
-
-          content.document.getElementById("wrongSystemTimeWithoutReference_URL")
-            .textContent = content.document.location.hostname;
-          content.document.getElementById("wrongSystemTimeWithoutReference_systemDate")
-            .textContent = formatter.format(systemDate);
-
-          content.document.getElementById("errorShortDesc")
-            .style.display = "none";
-          content.document.getElementById("wrongSystemTimeWithoutReferencePanel")
-            .style.display = "block";
-        }
-        learnMoreLink.href = baseURL + "time-errors";
-        break;
-    }
-  },
-
-  onCaptivePortalFreed(msg) {
-    content.dispatchEvent(new content.CustomEvent("AboutNetErrorCaptivePortalFreed"));
-  },
-
-  handleEvent(aEvent) {
-    if (!this.isAboutNetError && !this.isAboutCertError) {
-      return;
-    }
-
-    switch (aEvent.type) {
-    case "AboutNetErrorLoad":
-      this.onPageLoad(aEvent);
-      break;
-    case "AboutNetErrorOpenCaptivePortal":
-      this.openCaptivePortalPage(aEvent);
-      break;
-    case "AboutNetErrorSetAutomatic":
-      this.onSetAutomatic(aEvent);
-      break;
-    case "AboutNetErrorOverride":
-      this.onOverride(aEvent);
-      break;
-    case "AboutNetErrorResetPreferences":
-      this.onResetPreferences(aEvent);
-      break;
-    }
-  },
-
-  changedCertPrefs() {
-    for (let prefName of PREF_SSL_IMPACT) {
-      if (Services.prefs.prefHasUserValue(prefName)) {
-        return true;
-      }
-    }
-
-    return false;
-  },
-
-  onPageLoad(evt) {
-    if (this.isAboutCertError) {
-      let originalTarget = evt.originalTarget;
-      let ownerDoc = originalTarget.ownerDocument;
-      ClickEventHandler.onCertError(originalTarget, ownerDoc);
-    }
-
-    let automatic = Services.prefs.getBoolPref("security.ssl.errorReporting.automatic");
-    content.dispatchEvent(new content.CustomEvent("AboutNetErrorOptions", {
-      detail: JSON.stringify({
-        enabled: Services.prefs.getBoolPref("security.ssl.errorReporting.enabled"),
-        changedCertPrefs: this.changedCertPrefs(),
-        automatic
-      })
-    }));
-
-    sendAsyncMessage("Browser:SSLErrorReportTelemetry",
-                     {reportStatus: TLS_ERROR_REPORT_TELEMETRY_UI_SHOWN});
-  },
-
-  openCaptivePortalPage(evt) {
-    sendAsyncMessage("Browser:OpenCaptivePortalPage");
-  },
-
-
-  onResetPreferences(evt) {
-    sendAsyncMessage("Browser:ResetSSLPreferences");
-  },
-
-  onSetAutomatic(evt) {
-    sendAsyncMessage("Browser:SetSSLErrorReportAuto", {
-      automatic: evt.detail
-    });
-
-    // if we're enabling reports, send a report for this failure
-    if (evt.detail) {
-      let {host, port} = content.document.mozDocumentURIIfNotForErrorPages;
-      sendAsyncMessage("Browser:SendSSLErrorReport", {
-        uri: { host, port },
-        securityInfo: getSerializedSecurityInfo(docShell),
-      });
-
-    }
-  },
-
-  onOverride(evt) {
-    let {host, port} = content.document.mozDocumentURIIfNotForErrorPages;
-    sendAsyncMessage("Browser:OverrideWeakCrypto", { uri: {host, port} });
-  }
-}
-
-AboutNetAndCertErrorListener.init(this);
-
-
-var ClickEventHandler = {
-  init: function init() {
-    Cc["@mozilla.org/eventlistenerservice;1"]
-      .getService(Ci.nsIEventListenerService)
-      .addSystemEventListener(global, "click", this, true);
-  },
-
-  handleEvent(event) {
-    if (!event.isTrusted || event.defaultPrevented || event.button == 2) {
-      return;
-    }
-
-    let originalTarget = event.originalTarget;
-    let ownerDoc = originalTarget.ownerDocument;
-    if (!ownerDoc) {
-      return;
-    }
-
-    // Handle click events from about pages
-    if (ownerDoc.documentURI.startsWith("about:certerror")) {
-      this.onCertError(originalTarget, ownerDoc);
-      return;
-    } else if (ownerDoc.documentURI.startsWith("about:blocked")) {
-      this.onAboutBlocked(originalTarget, ownerDoc);
-      return;
-    } else if (ownerDoc.documentURI.startsWith("about:neterror")) {
-      this.onAboutNetError(event, ownerDoc.documentURI);
-      return;
-    }
-
-    let [href, node, principal] = this._hrefAndLinkNodeForClickEvent(event);
-
-    // get referrer attribute from clicked link and parse it
-    // if per element referrer is enabled, the element referrer overrules
-    // the document wide referrer
-    let referrerPolicy = ownerDoc.referrerPolicy;
-    if (Services.prefs.getBoolPref("network.http.enablePerElementReferrer") &&
-        node) {
-      let referrerAttrValue = Services.netUtils.parseAttributePolicyString(node.
-                              getAttribute("referrerpolicy"));
-      if (referrerAttrValue !== Ci.nsIHttpChannel.REFERRER_POLICY_UNSET) {
-        referrerPolicy = referrerAttrValue;
-      }
-    }
-
-    let json = { button: event.button, shiftKey: event.shiftKey,
-                 ctrlKey: event.ctrlKey, metaKey: event.metaKey,
-                 altKey: event.altKey, href: null, title: null,
-                 bookmark: false, referrerPolicy,
-                 triggeringPrincipal: principal,
-                 originAttributes: principal ? principal.originAttributes : {},
-                 isContentWindowPrivate: PrivateBrowsingUtils.isContentWindowPrivate(ownerDoc.defaultView)};
-
-    if (href) {
-      try {
-        BrowserUtils.urlSecurityCheck(href, principal);
-      } catch (e) {
-        return;
-      }
-
-      json.href = href;
-      if (node) {
-        json.title = node.getAttribute("title");
-        if (event.button == 0 && !event.ctrlKey && !event.shiftKey &&
-            !event.altKey && !event.metaKey) {
-          json.bookmark = node.getAttribute("rel") == "sidebar";
-          if (json.bookmark) {
-            event.preventDefault(); // Need to prevent the pageload.
-          }
-        }
-      }
-      json.noReferrer = BrowserUtils.linkHasNoReferrer(node)
-
-      // Check if the link needs to be opened with mixed content allowed.
-      // Only when the owner doc has |mixedContentChannel| and the same origin
-      // should we allow mixed content.
-      json.allowMixedContent = false;
-      let docshell = ownerDoc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
-                             .getInterface(Ci.nsIWebNavigation)
-                             .QueryInterface(Ci.nsIDocShell);
-      if (docShell.mixedContentChannel) {
-        const sm = Services.scriptSecurityManager;
-        try {
-          let targetURI = BrowserUtils.makeURI(href);
-          sm.checkSameOriginURI(docshell.mixedContentChannel.URI, targetURI, false);
-          json.allowMixedContent = true;
-        } catch (e) {}
-      }
-      json.originPrincipal = ownerDoc.nodePrincipal;
-
-      sendAsyncMessage("Content:Click", json);
-      return;
-    }
-
-    // This might be middle mouse navigation.
-    if (event.button == 1) {
-      sendAsyncMessage("Content:Click", json);
-    }
-  },
-
-  onCertError(targetElement, ownerDoc) {
-    let docShell = ownerDoc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
-                                       .getInterface(Ci.nsIWebNavigation)
-                                       .QueryInterface(Ci.nsIDocShell);
-    sendAsyncMessage("Browser:CertExceptionError", {
-      location: ownerDoc.location.href,
-      elementId: targetElement.getAttribute("id"),
-      isTopFrame: (ownerDoc.defaultView.parent === ownerDoc.defaultView),
-      securityInfoAsString: getSerializedSecurityInfo(docShell),
-    });
-  },
-
-  onAboutBlocked(targetElement, ownerDoc) {
-    var reason = "phishing";
-    if (/e=malwareBlocked/.test(ownerDoc.documentURI)) {
-      reason = "malware";
-    } else if (/e=unwantedBlocked/.test(ownerDoc.documentURI)) {
-      reason = "unwanted";
-    }
-    sendAsyncMessage("Browser:SiteBlockedError", {
-      location: ownerDoc.location.href,
-      reason,
-      elementId: targetElement.getAttribute("id"),
-      isTopFrame: (ownerDoc.defaultView.parent === ownerDoc.defaultView)
-    });
-  },
-
-  onAboutNetError(event, documentURI) {
-    let elmId = event.originalTarget.getAttribute("id");
-    if (elmId == "returnButton") {
-      sendAsyncMessage("Browser:SSLErrorGoBack", {});
-      return;
-    }
-    if (elmId != "errorTryAgain" || !/e=netOffline/.test(documentURI)) {
-      return;
-    }
-    // browser front end will handle clearing offline mode and refreshing
-    // the page *if* we're in offline mode now. Otherwise let the error page
-    // handle the click.
-    if (Services.io.offline) {
-      event.preventDefault();
-      sendAsyncMessage("Browser:EnableOnlineMode", {});
-    }
-  },
-
-  /**
-   * Extracts linkNode and href for the current click target.
-   *
-   * @param event
-   *        The click event.
-   * @return [href, linkNode, linkPrincipal].
-   *
-   * @note linkNode will be null if the click wasn't on an anchor
-   *       element. This includes SVG links, because callers expect |node|
-   *       to behave like an <a> element, which SVG links (XLink) don't.
-   */
-  _hrefAndLinkNodeForClickEvent(event) {
-    function isHTMLLink(aNode) {
-      // Be consistent with what nsContextMenu.js does.
-      return ((aNode instanceof content.HTMLAnchorElement && aNode.href) ||
-              (aNode instanceof content.HTMLAreaElement && aNode.href) ||
-              aNode instanceof content.HTMLLinkElement);
-    }
-
-    let node = event.target;
-    while (node && !isHTMLLink(node)) {
-      node = node.parentNode;
-    }
-
-    if (node)
-      return [node.href, node, node.ownerDocument.nodePrincipal];
-
-    // If there is no linkNode, try simple XLink.
-    let href, baseURI;
-    node = event.target;
-    while (node && !href) {
-      if (node.nodeType == content.Node.ELEMENT_NODE &&
-          (node.localName == "a" ||
-           node.namespaceURI == "http://www.w3.org/1998/Math/MathML")) {
-        href = node.getAttribute("href") ||
-               node.getAttributeNS("http://www.w3.org/1999/xlink", "href");
-        if (href) {
-          baseURI = node.ownerDocument.baseURIObject;
-          break;
-        }
-      }
-      node = node.parentNode;
-    }
-
-    // In case of XLink, we don't return the node we got href from since
-    // callers expect <a>-like elements.
-    // Note: makeURI() will throw if aUri is not a valid URI.
-    return [href ? BrowserUtils.makeURI(href, null, baseURI).spec : null, null,
-            node && node.ownerDocument.nodePrincipal];
-  }
-};
-ClickEventHandler.init();
-
-ContentLinkHandler.init(this);
-
-// TODO: Load this lazily so the JSM is run only if a relevant event/message fires.
-var pluginContent = new PluginContent(global);
-
-addEventListener("DOMWebNotificationClicked", function(event) {
-  sendAsyncMessage("DOMWebNotificationClicked", {});
-}, false);
-
-addEventListener("DOMServiceWorkerFocusClient", function(event) {
-  sendAsyncMessage("DOMServiceWorkerFocusClient", {});
-}, false);
-
-ContentWebRTC.init();
-addMessageListener("rtcpeer:Allow", ContentWebRTC);
-addMessageListener("rtcpeer:Deny", ContentWebRTC);
-addMessageListener("webrtc:Allow", ContentWebRTC);
-addMessageListener("webrtc:Deny", ContentWebRTC);
-addMessageListener("webrtc:StopSharing", ContentWebRTC);
-addMessageListener("webrtc:StartBrowserSharing", () => {
-  let windowID = content.QueryInterface(Ci.nsIInterfaceRequestor)
-                        .getInterface(Ci.nsIDOMWindowUtils).outerWindowID;
-  sendAsyncMessage("webrtc:response:StartBrowserSharing", {
-    windowID
-  });
-});
-
-addEventListener("pageshow", function(event) {
-  if (event.target == content.document) {
-    sendAsyncMessage("PageVisibility:Show", {
-      persisted: event.persisted,
-    });
-  }
-});
-addEventListener("pagehide", function(event) {
-  if (event.target == content.document) {
-    sendAsyncMessage("PageVisibility:Hide", {
-      persisted: event.persisted,
-    });
-  }
-});
-
-var PageMetadataMessenger = {
-  init() {
-    addMessageListener("PageMetadata:GetPageData", this);
-    addMessageListener("PageMetadata:GetMicroformats", this);
-  },
-  receiveMessage(message) {
-    switch (message.name) {
-      case "PageMetadata:GetPageData": {
-        let target = message.objects.target;
-        let result = PageMetadata.getData(content.document, target);
-        sendAsyncMessage("PageMetadata:PageDataResult", result);
-        break;
-      }
-      case "PageMetadata:GetMicroformats": {
-        let target = message.objects.target;
-        let result = PageMetadata.getMicroformats(content.document, target);
-        sendAsyncMessage("PageMetadata:MicroformatsResult", result);
-        break;
-      }
-    }
-  }
-}
-PageMetadataMessenger.init();
-
-addMessageListener("ContextMenu:SaveVideoFrameAsImage", (message) => {
-  let video = message.objects.target;
-  let canvas = content.document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
-  canvas.width = video.videoWidth;
-  canvas.height = video.videoHeight;
-
-  let ctxDraw = canvas.getContext("2d");
-  ctxDraw.drawImage(video, 0, 0);
-  sendAsyncMessage("ContextMenu:SaveVideoFrameAsImage:Result", {
-    dataURL: canvas.toDataURL("image/jpeg", ""),
-  });
-});
-
-addMessageListener("ContextMenu:MediaCommand", (message) => {
-  E10SUtils.wrapHandlingUserInput(
-    content, message.data.handlingUserInput,
-    () => {
-      let media = message.objects.element;
-      switch (message.data.command) {
-        case "play":
-          media.play();
-          break;
-        case "pause":
-          media.pause();
-          break;
-        case "loop":
-          media.loop = !media.loop;
-          break;
-        case "mute":
-          media.muted = true;
-          break;
-        case "unmute":
-          media.muted = false;
-          break;
-        case "playbackRate":
-          media.playbackRate = message.data.data;
-          break;
-        case "hidecontrols":
-          media.removeAttribute("controls");
-          break;
-        case "showcontrols":
-          media.setAttribute("controls", "true");
-          break;
-        case "fullscreen":
-          if (content.document.fullscreenEnabled)
-            media.requestFullscreen();
-          break;
-      }
-    });
-});
-
-addMessageListener("ContextMenu:Canvas:ToBlobURL", (message) => {
-  message.objects.target.toBlob((blob) => {
-    let blobURL = URL.createObjectURL(blob);
-    sendAsyncMessage("ContextMenu:Canvas:ToBlobURL:Result", { blobURL });
-  });
-});
-
-addMessageListener("ContextMenu:ReloadFrame", (message) => {
-  message.objects.target.ownerDocument.location.reload();
-});
-
-addMessageListener("ContextMenu:ReloadImage", (message) => {
-  let image = message.objects.target;
-  if (image instanceof Ci.nsIImageLoadingContent)
-    image.forceReload();
-});
-
-addMessageListener("ContextMenu:BookmarkFrame", (message) => {
-  let frame = message.objects.target.ownerDocument;
-  sendAsyncMessage("ContextMenu:BookmarkFrame:Result",
-                   { title: frame.title,
-                     description: PlacesUIUtils.getDescriptionFromDocument(frame) });
-});
-
-addMessageListener("ContextMenu:SearchFieldBookmarkData", (message) => {
-  let node = message.objects.target;
-
-  let charset = node.ownerDocument.characterSet;
-
-  let formBaseURI = BrowserUtils.makeURI(node.form.baseURI,
-                                         charset);
-
-  let formURI = BrowserUtils.makeURI(node.form.getAttribute("action"),
-                                     charset,
-                                     formBaseURI);
-
-  let spec = formURI.spec;
-
-  let isURLEncoded =
-               (node.form.method.toUpperCase() == "POST"
-                && (node.form.enctype == "application/x-www-form-urlencoded" ||
-                    node.form.enctype == ""));
-
-  let title = node.ownerDocument.title;
-  let description = PlacesUIUtils.getDescriptionFromDocument(node.ownerDocument);
-
-  let formData = [];
-
-  function escapeNameValuePair(aName, aValue, aIsFormUrlEncoded) {
-    if (aIsFormUrlEncoded) {
-      return escape(aName + "=" + aValue);
-    }
-    return escape(aName) + "=" + escape(aValue);
-  }
-
-  for (let el of node.form.elements) {
-    if (!el.type) // happens with fieldsets
-      continue;
-
-    if (el == node) {
-      formData.push((isURLEncoded) ? escapeNameValuePair(el.name, "%s", true) :
-                                     // Don't escape "%s", just append
-                                     escapeNameValuePair(el.name, "", false) + "%s");
-      continue;
-    }
-
-    let type = el.type.toLowerCase();
-
-    if (((el instanceof content.HTMLInputElement && el.mozIsTextField(true)) ||
-        type == "hidden" || type == "textarea") ||
-        ((type == "checkbox" || type == "radio") && el.checked)) {
-      formData.push(escapeNameValuePair(el.name, el.value, isURLEncoded));
-    } else if (el instanceof content.HTMLSelectElement && el.selectedIndex >= 0) {
-      for (let j = 0; j < el.options.length; j++) {
-        if (el.options[j].selected)
-          formData.push(escapeNameValuePair(el.name, el.options[j].value,
-                                            isURLEncoded));
-      }
-    }
-  }
-
-  let postData;
-
-  if (isURLEncoded)
-    postData = formData.join("&");
-  else {
-    let separator = spec.includes("?") ? "&" : "?";
-    spec += separator + formData.join("&");
-  }
-
-  sendAsyncMessage("ContextMenu:SearchFieldBookmarkData:Result",
-                   { spec, title, description, postData, charset });
-});
-
-addMessageListener("Bookmarks:GetPageDetails", (message) => {
-  let doc = content.document;
-  let isErrorPage = /^about:(neterror|certerror|blocked)/.test(doc.documentURI);
-  sendAsyncMessage("Bookmarks:GetPageDetails:Result",
-                   { isErrorPage,
-                     description: PlacesUIUtils.getDescriptionFromDocument(doc) });
-});
-
-var LightWeightThemeWebInstallListener = {
-  _previewWindow: null,
-
-  init() {
-    addEventListener("InstallBrowserTheme", this, false, true);
-    addEventListener("PreviewBrowserTheme", this, false, true);
-    addEventListener("ResetBrowserThemePreview", this, false, true);
-  },
-
-  handleEvent(event) {
-    switch (event.type) {
-      case "InstallBrowserTheme": {
-        sendAsyncMessage("LightWeightThemeWebInstaller:Install", {
-          baseURI: event.target.baseURI,
-          themeData: event.target.getAttribute("data-browsertheme"),
-        });
-        break;
-      }
-      case "PreviewBrowserTheme": {
-        sendAsyncMessage("LightWeightThemeWebInstaller:Preview", {
-          baseURI: event.target.baseURI,
-          themeData: event.target.getAttribute("data-browsertheme"),
-        });
-        this._previewWindow = event.target.ownerGlobal;
-        this._previewWindow.addEventListener("pagehide", this, true);
-        break;
-      }
-      case "pagehide": {
-        sendAsyncMessage("LightWeightThemeWebInstaller:ResetPreview");
-        this._resetPreviewWindow();
-        break;
-      }
-      case "ResetBrowserThemePreview": {
-        if (this._previewWindow) {
-          sendAsyncMessage("LightWeightThemeWebInstaller:ResetPreview",
-                           {baseURI: event.target.baseURI});
-          this._resetPreviewWindow();
-        }
-        break;
-      }
-    }
-  },
-
-  _resetPreviewWindow() {
-    this._previewWindow.removeEventListener("pagehide", this, true);
-    this._previewWindow = null;
-  }
-};
-
-LightWeightThemeWebInstallListener.init();
-
-function disableSetDesktopBackground(aTarget) {
-  // Disable the Set as Desktop Background menu item if we're still trying
-  // to load the image or the load failed.
-  if (!(aTarget instanceof Ci.nsIImageLoadingContent))
-    return true;
-
-  if (("complete" in aTarget) && !aTarget.complete)
-    return true;
-
-  if (aTarget.currentURI.schemeIs("javascript"))
-    return true;
-
-  let request = aTarget.QueryInterface(Ci.nsIImageLoadingContent)
-                       .getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
-  if (!request)
-    return true;
-
-  return false;
-}
-
-addMessageListener("ContextMenu:SetAsDesktopBackground", (message) => {
-  let target = message.objects.target;
-
-  // Paranoia: check disableSetDesktopBackground again, in case the
-  // image changed since the context menu was initiated.
-  let disable = disableSetDesktopBackground(target);
-
-  if (!disable) {
-    try {
-      BrowserUtils.urlSecurityCheck(target.currentURI.spec, target.ownerDocument.nodePrincipal);
-      let canvas = content.document.createElement("canvas");
-      canvas.width = target.naturalWidth;
-      canvas.height = target.naturalHeight;
-      let ctx = canvas.getContext("2d");
-      ctx.drawImage(target, 0, 0);
-      let dataUrl = canvas.toDataURL();
-      sendAsyncMessage("ContextMenu:SetAsDesktopBackground:Result",
-                       { dataUrl });
-    } catch (e) {
-      Cu.reportError(e);
-      disable = true;
-    }
-  }
-
-  if (disable)
-    sendAsyncMessage("ContextMenu:SetAsDesktopBackground:Result", { disable });
-});
-
-var PageInfoListener = {
-
-  init() {
-    addMessageListener("PageInfo:getData", this);
-  },
-
-  receiveMessage(message) {
-    let strings = message.data.strings;
-    let window;
-    let document;
-
-    let frameOuterWindowID = message.data.frameOuterWindowID;
-
-    // If inside frame then get the frame's window and document.
-    if (frameOuterWindowID) {
-      window = Services.wm.getOuterWindowWithId(frameOuterWindowID);
-      document = window.document;
-    } else {
-      window = content.window;
-      document = content.document;
-    }
-
-    let imageElement = message.objects.imageElement;
-
-    let pageInfoData = {metaViewRows: this.getMetaInfo(document),
-                        docInfo: this.getDocumentInfo(document),
-                        feeds: this.getFeedsInfo(document, strings),
-                        windowInfo: this.getWindowInfo(window),
-                        imageInfo: this.getImageInfo(imageElement)};
-
-    sendAsyncMessage("PageInfo:data", pageInfoData);
-
-    // Separate step so page info dialog isn't blank while waiting for this to finish.
-    this.getMediaInfo(document, window, strings);
-  },
-
-  getImageInfo(imageElement) {
-    let imageInfo = null;
-    if (imageElement) {
-      imageInfo = {
-        currentSrc: imageElement.currentSrc,
-        width: imageElement.width,
-        height: imageElement.height,
-        imageText: imageElement.title || imageElement.alt
-      };
-    }
-    return imageInfo;
-  },
-
-  getMetaInfo(document) {
-    let metaViewRows = [];
-
-    // Get the meta tags from the page.
-    let metaNodes = document.getElementsByTagName("meta");
-
-    for (let metaNode of metaNodes) {
-      metaViewRows.push([metaNode.name || metaNode.httpEquiv || metaNode.getAttribute("property"),
-                        metaNode.content]);
-    }
-
-    return metaViewRows;
-  },
-
-  getWindowInfo(window) {
-    let windowInfo = {};
-    windowInfo.isTopWindow = window == window.top;
-
-    let hostName = null;
-    try {
-      hostName = window.location.host;
-    } catch (exception) { }
-
-    windowInfo.hostName = hostName;
-    return windowInfo;
-  },
-
-  getDocumentInfo(document) {
-    let docInfo = {};
-    docInfo.title = document.title;
-    docInfo.location = document.location.toString();
-    docInfo.referrer = document.referrer;
-    docInfo.compatMode = document.compatMode;
-    docInfo.contentType = document.contentType;
-    docInfo.characterSet = document.characterSet;
-    docInfo.lastModified = document.lastModified;
-    docInfo.principal = document.nodePrincipal;
-
-    let documentURIObject = {};
-    documentURIObject.spec = document.documentURIObject.spec;
-    documentURIObject.originCharset = document.documentURIObject.originCharset;
-    docInfo.documentURIObject = documentURIObject;
-
-    docInfo.isContentWindowPrivate = PrivateBrowsingUtils.isContentWindowPrivate(content);
-
-    return docInfo;
-  },
-
-  getFeedsInfo(document, strings) {
-    let feeds = [];
-    // Get the feeds from the page.
-    let linkNodes = document.getElementsByTagName("link");
-    let length = linkNodes.length;
-    for (let i = 0; i < length; i++) {
-      let link = linkNodes[i];
-      if (!link.href) {
-        continue;
-      }
-      let rel = link.rel && link.rel.toLowerCase();
-      let rels = {};
-
-      if (rel) {
-        for (let relVal of rel.split(/\s+/)) {
-          rels[relVal] = true;
-        }
-      }
-
-      if (rels.feed || (link.type && rels.alternate && !rels.stylesheet)) {
-        let type = Feeds.isValidFeed(link, document.nodePrincipal, "feed" in rels);
-        if (type) {
-          type = strings[type] || strings["application/rss+xml"];
-          feeds.push([link.title, type, link.href]);
-        }
-      }
-    }
-    return feeds;
-  },
-
-  // Only called once to get the media tab's media elements from the content page.
-  getMediaInfo(document, window, strings) {
-    let frameList = this.goThroughFrames(document, window);
-    Task.spawn(() => this.processFrames(document, frameList, strings));
-  },
-
-  goThroughFrames(document, window) {
-    let frameList = [document];
-    if (window && window.frames.length > 0) {
-      let num = window.frames.length;
-      for (let i = 0; i < num; i++) {
-        // Recurse through the frames.
-        frameList.concat(this.goThroughFrames(window.frames[i].document,
-                                              window.frames[i]));
-      }
-    }
-    return frameList;
-  },
-
-  *processFrames(document, frameList, strings) {
-    let nodeCount = 0;
-    for (let doc of frameList) {
-      let iterator = doc.createTreeWalker(doc, content.NodeFilter.SHOW_ELEMENT);
-
-      // Goes through all the elements on the doc. imageViewRows takes only the media elements.
-      while (iterator.nextNode()) {
-        let mediaItems = this.getMediaItems(document, strings, iterator.currentNode);
-
-        if (mediaItems.length) {
-          sendAsyncMessage("PageInfo:mediaData",
-                           {mediaItems, isComplete: false});
-        }
-
-        if (++nodeCount % 500 == 0) {
-          // setTimeout every 500 elements so we don't keep blocking the content process.
-          yield new Promise(resolve => setTimeout(resolve, 10));
-        }
-      }
-    }
-    // Send that page info media fetching has finished.
-    sendAsyncMessage("PageInfo:mediaData", {isComplete: true});
-  },
-
-  getMediaItems(document, strings, elem) {
-    // Check for images defined in CSS (e.g. background, borders)
-    let computedStyle = elem.ownerGlobal.getComputedStyle(elem);
-    // A node can have multiple media items associated with it - for example,
-    // multiple background images.
-    let mediaItems = [];
-
-    let addImage = (url, type, alt, el, isBg) => {
-      let element = this.serializeElementInfo(document, url, type, alt, el, isBg);
-      mediaItems.push([url, type, alt, element, isBg]);
-    };
-
-    if (computedStyle) {
-      let addImgFunc = (label, val) => {
-        if (val.primitiveType == content.CSSPrimitiveValue.CSS_URI) {
-          addImage(val.getStringValue(), label, strings.notSet, elem, true);
-        } else if (val.primitiveType == content.CSSPrimitiveValue.CSS_STRING) {
-          // This is for -moz-image-rect.
-          // TODO: Reimplement once bug 714757 is fixed.
-          let strVal = val.getStringValue();
-          if (strVal.search(/^.*url\(\"?/) > -1) {
-            let url = strVal.replace(/^.*url\(\"?/, "").replace(/\"?\).*$/, "");
-            addImage(url, label, strings.notSet, elem, true);
-          }
-        } else if (val.cssValueType == content.CSSValue.CSS_VALUE_LIST) {
-          // Recursively resolve multiple nested CSS value lists.
-          for (let i = 0; i < val.length; i++) {
-            addImgFunc(label, val.item(i));
-          }
-        }
-      };
-
-      addImgFunc(strings.mediaBGImg, computedStyle.getPropertyCSSValue("background-image"));
-      addImgFunc(strings.mediaBorderImg, computedStyle.getPropertyCSSValue("border-image-source"));
-      addImgFunc(strings.mediaListImg, computedStyle.getPropertyCSSValue("list-style-image"));
-      addImgFunc(strings.mediaCursor, computedStyle.getPropertyCSSValue("cursor"));
-    }
-
-    // One swi^H^H^Hif-else to rule them all.
-    if (elem instanceof content.HTMLImageElement) {
-      addImage(elem.src, strings.mediaImg,
-               (elem.hasAttribute("alt")) ? elem.alt : strings.notSet, elem, false);
-    } else if (elem instanceof content.SVGImageElement) {
-      try {
-        // Note: makeURLAbsolute will throw if either the baseURI is not a valid URI
-        //       or the URI formed from the baseURI and the URL is not a valid URI.
-        if (elem.href.baseVal) {
-          let href = Services.io.newURI(elem.href.baseVal, null, Services.io.newURI(elem.baseURI)).spec;
-          addImage(href, strings.mediaImg, "", elem, false);
-        }
-      } catch (e) { }
-    } else if (elem instanceof content.HTMLVideoElement) {
-      addImage(elem.currentSrc, strings.mediaVideo, "", elem, false);
-    } else if (elem instanceof content.HTMLAudioElement) {
-      addImage(elem.currentSrc, strings.mediaAudio, "", elem, false);
-    } else if (elem instanceof content.HTMLLinkElement) {
-      if (elem.rel && /\bicon\b/i.test(elem.rel)) {
-        addImage(elem.href, strings.mediaLink, "", elem, false);
-      }
-    } else if (elem instanceof content.HTMLInputElement || elem instanceof content.HTMLButtonElement) {
-      if (elem.type.toLowerCase() == "image") {
-        addImage(elem.src, strings.mediaInput,
-                 (elem.hasAttribute("alt")) ? elem.alt : strings.notSet, elem, false);
-      }
-    } else if (elem instanceof content.HTMLObjectElement) {
-      addImage(elem.data, strings.mediaObject, this.getValueText(elem), elem, false);
-    } else if (elem instanceof content.HTMLEmbedElement) {
-      addImage(elem.src, strings.mediaEmbed, "", elem, false);
-    }
-
-    return mediaItems;
-  },
-
-  /**
-   * Set up a JSON element object with all the instanceOf and other infomation that
-   * makePreview in pageInfo.js uses to figure out how to display the preview.
-   */
-
-  serializeElementInfo(document, url, type, alt, item, isBG) {
-    let result = {};
-
-    let imageText;
-    if (!isBG &&
-        !(item instanceof content.SVGImageElement) &&
-        !(document instanceof content.ImageDocument)) {
-      imageText = item.title || item.alt;
-
-      if (!imageText && !(item instanceof content.HTMLImageElement)) {
-        imageText = this.getValueText(item);
-      }
-    }
-
-    result.imageText = imageText;
-    result.longDesc = item.longDesc;
-    result.numFrames = 1;
-
-    if (item instanceof content.HTMLObjectElement ||
-      item instanceof content.HTMLEmbedElement ||
-      item instanceof content.HTMLLinkElement) {
-      result.mimeType = item.type;
-    }
-
-    if (!result.mimeType && !isBG && item instanceof Ci.nsIImageLoadingContent) {
-      // Interface for image loading content.
-      let imageRequest = item.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
-      if (imageRequest) {
-        result.mimeType = imageRequest.mimeType;
-        let image = !(imageRequest.imageStatus & imageRequest.STATUS_ERROR) && imageRequest.image;
-        if (image) {
-          result.numFrames = image.numFrames;
-        }
-      }
-    }
-
-    // If we have a data url, get the MIME type from the url.
-    if (!result.mimeType && url.startsWith("data:")) {
-      let dataMimeType = /^data:(image\/[^;,]+)/i.exec(url);
-      if (dataMimeType)
-        result.mimeType = dataMimeType[1].toLowerCase();
-    }
-
-    result.HTMLLinkElement = item instanceof content.HTMLLinkElement;
-    result.HTMLInputElement = item instanceof content.HTMLInputElement;
-    result.HTMLImageElement = item instanceof content.HTMLImageElement;
-    result.HTMLObjectElement = item instanceof content.HTMLObjectElement;
-    result.SVGImageElement = item instanceof content.SVGImageElement;
-    result.HTMLVideoElement = item instanceof content.HTMLVideoElement;
-    result.HTMLAudioElement = item instanceof content.HTMLAudioElement;
-
-    if (isBG) {
-      // Items that are showing this image as a background
-      // image might not necessarily have a width or height,
-      // so we'll dynamically generate an image and send up the
-      // natural dimensions.
-      let img = content.document.createElement("img");
-      img.src = url;
-      result.naturalWidth = img.naturalWidth;
-      result.naturalHeight = img.naturalHeight;
-    } else {
-      // Otherwise, we can use the current width and height
-      // of the image.
-      result.width = item.width;
-      result.height = item.height;
-    }
-
-    if (item instanceof content.SVGImageElement) {
-      result.SVGImageElementWidth = item.width.baseVal.value;
-      result.SVGImageElementHeight = item.height.baseVal.value;
-    }
-
-    result.baseURI = item.baseURI;
-
-    return result;
-  },
-
-  // Other Misc Stuff
-  // Modified from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html
-  // parse a node to extract the contents of the node
-  getValueText(node) {
-
-    let valueText = "";
-
-    // Form input elements don't generally contain information that is useful to our callers, so return nothing.
-    if (node instanceof content.HTMLInputElement ||
-        node instanceof content.HTMLSelectElement ||
-        node instanceof content.HTMLTextAreaElement) {
-      return valueText;
-    }
-
-    // Otherwise recurse for each child.
-    let length = node.childNodes.length;
-
-    for (let i = 0; i < length; i++) {
-      let childNode = node.childNodes[i];
-      let nodeType = childNode.nodeType;
-
-      // Text nodes are where the goods are.
-      if (nodeType == content.Node.TEXT_NODE) {
-        valueText += " " + childNode.nodeValue;
-      } else if (nodeType == content.Node.ELEMENT_NODE) {
-        // And elements can have more text inside them.
-        // Images are special, we want to capture the alt text as if the image weren't there.
-        if (childNode instanceof content.HTMLImageElement) {
-          valueText += " " + this.getAltText(childNode);
-        } else {
-          valueText += " " + this.getValueText(childNode);
-        }
-      }
-    }
-
-    return this.stripWS(valueText);
-  },
-
-  // Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html.
-  // Traverse the tree in search of an img or area element and grab its alt tag.
-  getAltText(node) {
-    let altText = "";
-
-    if (node.alt) {
-      return node.alt;
-    }
-    let length = node.childNodes.length;
-    for (let i = 0; i < length; i++) {
-      if ((altText = this.getAltText(node.childNodes[i]) != undefined)) { // stupid js warning...
-        return altText;
-      }
-    }
-    return "";
-  },
-
-  // Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html.
-  // Strip leading and trailing whitespace, and replace multiple consecutive whitespace characters with a single space.
-  stripWS(text) {
-    let middleRE = /\s+/g;
-    let endRE = /(^\s+)|(\s+$)/g;
-
-    text = text.replace(middleRE, " ");
-    return text.replace(endRE, "");
-  }
-};
-PageInfoListener.init();
-
-let OfflineApps = {
-  _docId: 0,
-  _docIdMap: new Map(),
-
-  _docManifestSet: new Set(),
-
-  _observerAdded: false,
-  registerWindow(aWindow) {
-    if (!this._observerAdded) {
-      this._observerAdded = true;
-      Services.obs.addObserver(this, "offline-cache-update-completed", true);
-    }
-    let manifestURI = this._getManifestURI(aWindow);
-    this._docManifestSet.add(manifestURI.spec);
-  },
-
-  handleEvent(event) {
-    if (event.type == "MozApplicationManifest") {
-      this.offlineAppRequested(event.originalTarget.defaultView);
-    }
-  },
-
-  _getManifestURI(aWindow) {
-    if (!aWindow.document.documentElement)
-      return null;
-
-    var attr = aWindow.document.documentElement.getAttribute("manifest");
-    if (!attr)
-      return null;
-
-    try {
-      var contentURI = BrowserUtils.makeURI(aWindow.location.href, null, null);
-      return BrowserUtils.makeURI(attr, aWindow.document.characterSet, contentURI);
-    } catch (e) {
-      return null;
-    }
-  },
-
-  offlineAppRequested(aContentWindow) {
-    this.registerWindow(aContentWindow);
-    if (!Services.prefs.getBoolPref("browser.offline-apps.notify")) {
-      return;
-    }
-
-    let currentURI = aContentWindow.document.documentURIObject;
-    // don't bother showing UI if the user has already made a decision
-    if (Services.perms.testExactPermission(currentURI, "offline-app") != Services.perms.UNKNOWN_ACTION)
-      return;
-
-    try {
-      if (Services.prefs.getBoolPref("offline-apps.allow_by_default")) {
-        // all pages can use offline capabilities, no need to ask the user
-        return;
-      }
-    } catch (e) {
-      // this pref isn't set by default, ignore failures
-    }
-    let docId = ++this._docId;
-    this._docIdMap.set(docId, Cu.getWeakReference(aContentWindow.document));
-    sendAsyncMessage("OfflineApps:RequestPermission", {
-      uri: currentURI.spec,
-      docId,
-    });
-  },
-
-  _startFetching(aDocument) {
-    if (!aDocument.documentElement)
-      return;
-
-    let manifestURI = this._getManifestURI(aDocument.defaultView);
-    if (!manifestURI)
-      return;
-
-    var updateService = Cc["@mozilla.org/offlinecacheupdate-service;1"].
-                        getService(Ci.nsIOfflineCacheUpdateService);
-    updateService.scheduleUpdate(manifestURI, aDocument.documentURIObject,
-                                 aDocument.nodePrincipal, aDocument.defaultView);
-  },
-
-  receiveMessage(aMessage) {
-    if (aMessage.name == "OfflineApps:StartFetching") {
-      let doc = this._docIdMap.get(aMessage.data.docId);
-      doc = doc && doc.get();
-      if (doc) {
-        this._startFetching(doc);
-      }
-      this._docIdMap.delete(aMessage.data.docId);
-    }
-  },
-
-  observe(aSubject, aTopic, aState) {
-    if (aTopic == "offline-cache-update-completed") {
-      let cacheUpdate = aSubject.QueryInterface(Ci.nsIOfflineCacheUpdate);
-      let uri = cacheUpdate.manifestURI;
-      if (uri && this._docManifestSet.has(uri.spec)) {
-        sendAsyncMessage("OfflineApps:CheckUsage", {uri: uri.spec});
-      }
-    }
-  },
-  QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
-                                         Ci.nsISupportsWeakReference]),
-};
-
-addEventListener("MozApplicationManifest", OfflineApps, false);
-addMessageListener("OfflineApps:StartFetching", OfflineApps);