Bug 1515712 - add default pref and start corroborator if enabled r=kmag

Depends on D15123

Differential Revision: https://phabricator.services.mozilla.com/D28250

--HG--
extra : moz-landing-system : lando

browser/app/profile/firefox.js

@@ -1879,3 +1879,10 @@ pref("browser.toolbars.keyboard_navigation", true);
 // quick access to sign-in and manage your Firefox Account.
 pref("identity.fxaccounts.toolbar.enabled", true);
 pref("identity.fxaccounts.toolbar.accessed", false);
+
+// Check bundled JAR and XPI files for corruption.
+#ifdef RELEASE_OR_BETA
+pref("corroborator.enabled", false);
+#else
+pref("corroborator.enabled", true);
+#endif

browser/components/BrowserGlue.jsm

@@ -391,6 +391,7 @@ XPCOMUtils.defineLazyModuleGetters(this, {
   BrowserUsageTelemetry: "resource:///modules/BrowserUsageTelemetry.jsm",
   BrowserWindowTracker: "resource:///modules/BrowserWindowTracker.jsm",
   ContextualIdentityService: "resource://gre/modules/ContextualIdentityService.jsm",
+  Corroborate: "resource://gre/modules/Corroborate.jsm",
   DateTimePickerParent: "resource://gre/modules/DateTimePickerParent.jsm",
   Discovery: "resource:///modules/Discovery.jsm",
   ExtensionsUI: "resource:///modules/ExtensionsUI.jsm",
@@ -1574,6 +1575,10 @@ BrowserGlue.prototype = {
     this._monitorScreenshotsPref();
     this._monitorWebcompatReporterPref();
 
+    if (Services.prefs.getBoolPref("corroborator.enabled", true)) {
+      Corroborate.init().catch(Cu.reportError);
+    }
+
     let pService = Cc["@mozilla.org/toolkit/profile-service;1"].
                   getService(Ci.nsIToolkitProfileService);
     if (pService.createdAlternateProfile) {