Switch DomAutomationController to be a RenderFrameObserver.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index e87aa721f8f03ea9995a3e1fc0c4eecdc5d57a85..2702893a9b0582d3c3a35c5aa007c4ef09aa0ed9 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -57,7 +57,6 @@
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/content_browser_client.h"
-#include "content/public/browser/dom_operation_notification_details.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
@@ -1251,8 +1250,6 @@ bool RenderViewHostImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(ViewHostMsg_RunFileChooser, OnRunFileChooser)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidAccessInitialDocument,
                         OnDidAccessInitialDocument)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_DomOperationResponse,
-                        OnDomOperationResponse)
     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_Events, OnAccessibilityEvents)
     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_LocationChanges,
                         OnAccessibilityLocationChanges)
@@ -2036,15 +2033,6 @@ void RenderViewHostImpl::OnDidAccessInitialDocument() {
   delegate_->DidAccessInitialDocument();
 }
 
-void RenderViewHostImpl::OnDomOperationResponse(
-    const std::string& json_string, int automation_id) {
-  DomOperationNotificationDetails details(json_string, automation_id);
-  NotificationService::current()->Notify(
-      NOTIFICATION_DOM_OPERATION_RESPONSE,
-      Source<RenderViewHost>(this),
-      Details<DomOperationNotificationDetails>(&details));
-}
-
 void RenderViewHostImpl::OnFocusedNodeTouched(bool editable) {
 #if defined(OS_WIN)
   if (editable) {