Bug 1579897 - Make webIsolated= processes work in about:support. r=mconley,fluent-reviewers,flod

Remove the URLs so they can have a translated string in about:support.

Differential Revision: https://phabricator.services.mozilla.com/D45373

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

dom/ipc/ContentParent.h

@@ -1372,6 +1372,7 @@ class ContentParent final : public PContentParent,
 
 NS_DEFINE_STATIC_IID_ACCESSOR(ContentParent, NS_CONTENTPARENT_IID)
 
+// This is the C++ version of remoteTypePrefix in E10SUtils.jsm.
 const nsDependentSubstring RemoteTypePrefix(
     const nsAString& aContentProcessType);
 }  // namespace dom

toolkit/locales/en-US/toolkit/global/processTypes.ftl

@@ -21,6 +21,10 @@ process-type-file = Local File
 # permission to allocate large amounts of memory
 process-type-weblargeallocation = Large Allocation
 
+# process used to isolate a webpage from other web pages
+# to improve security
+process-type-webisolated = Isolated Web Content
+
 # process used to communicate with the GPU for
 # graphics acceleration
 process-type-gpu = GPU

toolkit/modules/E10SUtils.jsm

@@ -801,6 +801,14 @@ var E10SUtils = {
     return [tabPid, ...pids];
   },
 
+  /**
+   * The suffix after a `=` in a remoteType is dynamic, and used to control the
+   * process pool to use. The C++ version of this method is mozilla::dom::RemoteTypePrefix().
+   */
+  remoteTypePrefix(aRemoteType) {
+    return aRemoteType.split("=")[0];
+  },
+
   /**
    * If Fission is enabled, the remote type for a standard content process will
    * start with webIsolated=.

toolkit/modules/Troubleshoot.jsm

@@ -11,6 +11,9 @@ const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
 const { AppConstants } = ChromeUtils.import(
   "resource://gre/modules/AppConstants.jsm"
 );
+const { E10SUtils } = ChromeUtils.import(
+  "resource://gre/modules/E10SUtils.jsm"
+);
 const { XPCOMUtils } = ChromeUtils.import(
   "resource://gre/modules/XPCOMUtils.jsm"
 );
@@ -359,6 +362,8 @@ var dataProviders = {
         continue;
       }
 
+      remoteType = E10SUtils.remoteTypePrefix(remoteType);
+
       if (remoteTypes[remoteType]) {
         remoteTypes[remoteType]++;
       } else {