Add WasShown/WasHidden to RenderFrameObserver.

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 393 matching lines @@
       notification_provider_(NULL),
       media_stream_client_(NULL),
       web_user_media_client_(NULL),
       weak_factory_(this) {
   RenderThread::Get()->AddRoute(routing_id_, this);
 
   std::pair<RoutingIDFrameMap::iterator, bool> result =
       g_routing_id_frame_map.Get().insert(std::make_pair(routing_id_, this));
   CHECK(result.second) << "Inserting a duplicate item.";
 
+  render_view_->RegisterRenderFrame(this);
+
 #if defined(OS_ANDROID)
   new JavaBridgeDispatcher(this);
 #endif
 
 #if defined(ENABLE_NOTIFICATIONS)
   notification_provider_ = new NotificationProvider(this);
 #endif
 }
 
 RenderFrameImpl::~RenderFrameImpl() {
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, RenderFrameGone());
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, OnDestruct());
+  render_view_->UnregisterRenderFrame(this);
   g_routing_id_frame_map.Get().erase(routing_id_);
   RenderThread::Get()->RemoveRoute(routing_id_);
 }
 
 void RenderFrameImpl::SetWebFrame(blink::WebLocalFrame* web_frame) {
   DCHECK(!frame_);
 
   std::pair<FrameMap::iterator, bool> result = g_frame_map.Get().insert(
       std::make_pair(web_frame, this));
   CHECK(result.second) << "Inserting a duplicate item.";
@@ skipping 2439 matching lines @@
 
 void RenderFrameImpl::RemoveObserver(RenderFrameObserver* observer) {
   observer->RenderFrameGone();
   observers_.RemoveObserver(observer);
 }
 
 void RenderFrameImpl::OnStop() {
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, OnStop());
 }
 
+void RenderFrameImpl::WasHidden() {
+  FOR_EACH_OBSERVER(RenderFrameObserver, observers_, WasHidden());
+}
+
+void RenderFrameImpl::WasShown() {
+  FOR_EACH_OBSERVER(RenderFrameObserver, observers_, WasShown());
+}
+
 // Tell the embedding application that the URL of the active page has changed.
 void RenderFrameImpl::UpdateURL(blink::WebFrame* frame) {
   DCHECK(!frame_ || frame_ == frame);
   WebDataSource* ds = frame->dataSource();
   DCHECK(ds);
 
   const WebURLRequest& request = ds->request();
   const WebURLResponse& response = ds->response();
 
   DocumentState* document_state = DocumentState::FromDataSource(ds);
@@ skipping 591 matching lines @@
       weak_factory_.GetWeakPtr(),
       render_view_->media_player_manager_,
       stream_texture_factory,
       RenderThreadImpl::current()->GetMediaThreadMessageLoopProxy(),
       new RenderMediaLog());
 }
 
 #endif
 
 }  // namespace content