Switch DomAutomationController to be a RenderFrameObserver.

content/browser/frame_host/interstitial_page_impl.cc

Index: content/browser/frame_host/interstitial_page_impl.cc
diff --git a/content/browser/frame_host/interstitial_page_impl.cc b/content/browser/frame_host/interstitial_page_impl.cc
index 090ac124aa5d697f84d2cc40bc61a3f1e61f37b9..6a4ab44409b5256ee188d5c6430321b28d00022d 100644
--- a/content/browser/frame_host/interstitial_page_impl.cc
+++ b/content/browser/frame_host/interstitial_page_impl.cc
@@ -248,9 +248,6 @@ void InterstitialPageImpl::Show() {
 
   notification_registrar_.Add(this, NOTIFICATION_NAV_ENTRY_PENDING,
       Source<NavigationController>(controller_));
-  notification_registrar_.Add(
-      this, NOTIFICATION_DOM_OPERATION_RESPONSE,
-      Source<RenderViewHost>(render_view_host_));
 }
 
 void InterstitialPageImpl::Hide() {
@@ -345,13 +342,6 @@ void InterstitialPageImpl::Observe(
         TakeActionOnResourceDispatcher(CANCEL);
       }
       break;
-    case NOTIFICATION_DOM_OPERATION_RESPONSE:
-      if (enabled()) {
-        Details<DomOperationNotificationDetails> dom_op_details(
-            details);
-        delegate_->CommandReceived(dom_op_details->json);
-      }
-      break;
     default:
       NOTREACHED();
   }
@@ -374,6 +364,18 @@ void InterstitialPageImpl::RenderFrameCreated(
       render_frame_host);
 }
 
+void InterstitialPageImpl::OnDomOperationResponse(
+    const DomOperationNotificationDetails& details) {
+  // Needed by test code.
+  NotificationService::current()->Notify(
+      NOTIFICATION_DOM_OPERATION_RESPONSE,
+      Source<WebContents>(web_contents()),
+      Details<const DomOperationNotificationDetails>(&details));
+  if (!enabled())
+    return;
+  delegate_->CommandReceived(details.json);
+}
+
 RenderViewHostDelegateView* InterstitialPageImpl::GetDelegateView() {
   return rvh_delegate_view_.get();
 }