Bug 1608516 - Part 1: Add IPCs for allowing do AddBlockedNodeByClassifier() across process boundaries. r=baku

This patch adds IPCs that allow us to be able to report the blocked node
across the process boundary.

Differential Revision: https://phabricator.services.mozilla.com/D71938

dom/ipc/BrowserBridgeChild.cpp

@@ -249,6 +249,21 @@ mozilla::ipc::IPCResult BrowserBridgeChild::RecvSubFrameCrashed(
   return IPC_OK();
 }
 
+mozilla::ipc::IPCResult BrowserBridgeChild::RecvAddBlockedNodeByClassifier() {
+  RefPtr<Element> owner = mFrameLoader->GetOwnerContent();
+  if (!owner) {
+    return IPC_OK();
+  }
+
+  RefPtr<Document> doc = mFrameLoader->GetOwnerDoc();
+  if (!doc) {
+    return IPC_OK();
+  }
+
+  doc->AddBlockedNodeByClassifier(owner);
+  return IPC_OK();
+}
+
 void BrowserBridgeChild::ActorDestroy(ActorDestroyReason aWhy) {
   if (!mBrowsingContext) {
     // This BBC was never valid, skip teardown.

dom/ipc/BrowserBridgeChild.h

@@ -98,6 +98,8 @@ class BrowserBridgeChild : public PBrowserBridgeChild {
   mozilla::ipc::IPCResult RecvSubFrameCrashed(
       const MaybeDiscarded<BrowsingContext>& aContext);
 
+  mozilla::ipc::IPCResult RecvAddBlockedNodeByClassifier();
+
   void ActorDestroy(ActorDestroyReason aWhy) override;
 
  private:

dom/ipc/BrowserParent.cpp

@@ -2813,6 +2813,18 @@ mozilla::ipc::IPCResult BrowserParent::RecvNotifyContentBlockingEvent(
   return IPC_OK();
 }
 
+mozilla::ipc::IPCResult
+BrowserParent::RecvReportBlockedEmbedderNodeByClassifier() {
+  BrowserBridgeParent* bridge = GetBrowserBridgeParent();
+
+  if (!bridge) {
+    return IPC_OK();
+  }
+
+  Unused << bridge->SendAddBlockedNodeByClassifier();
+  return IPC_OK();
+}
+
 bool BrowserParent::GetWebProgressListener(
     nsIBrowser** aOutBrowser, nsIWebProgress** aOutManager,
     nsIWebProgressListener** aOutListener) {

dom/ipc/BrowserParent.h

@@ -316,6 +316,8 @@ class BrowserParent final : public PBrowserParent,
       const Maybe<mozilla::ContentBlockingNotifier::StorageAccessGrantedReason>&
           aReason);
 
+  mozilla::ipc::IPCResult RecvReportBlockedEmbedderNodeByClassifier();
+
   mozilla::ipc::IPCResult RecvNavigationFinished();
 
   bool GetWebProgressListener(nsIBrowser** aOutBrowser,

dom/ipc/PBrowser.ipdl

@@ -688,6 +688,8 @@ parent:
                              ScrollAxis aHorizontal, ScrollFlags aScrollFlags,
                              int32_t aAppUnitsPerDevPixel);
 
+    async ReportBlockedEmbedderNodeByClassifier();
+
 child:
     /**
      * Notify the remote browser that it has been Show()n on this side. This

dom/ipc/PBrowserBridge.ipdl

@@ -69,6 +69,8 @@ child:
 
   async SubFrameCrashed(MaybeDiscardedBrowsingContext aContext);
 
+  async AddBlockedNodeByClassifier();
+
 parent:
   // Destroy the remote web browser due to the nsFrameLoader going away.
   async __delete__();