Associate an id with the output surface to handle lost contexts

content/browser/renderer_host/render_widget_host_view_guest.cc

 // Copyright (c) 2012 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 "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
@@ skipping 160 matching lines @@
       new BrowserPluginMsg_BuffersSwapped(guest_->instance_id(), guest_params));
 }
 
 void RenderWidgetHostViewGuest::AcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
     int gpu_host_id) {
   NOTREACHED();
 }
 
 void RenderWidgetHostViewGuest::OnSwapCompositorFrame(
+    uint32 output_surface_id,
     scoped_ptr<cc::CompositorFrame> frame) {
   if (frame->software_frame_data) {
     cc::SoftwareFrameData* frame_data = frame->software_frame_data.get();
 #ifdef OS_WIN
     base::SharedMemory shared_memory(frame_data->handle, true,
                                      host_->GetProcess()->GetHandle());
 #else
     base::SharedMemory shared_memory(frame_data->handle, true);
 #endif
 
     RenderWidgetHostView* embedder_view =
         guest_->GetEmbedderRenderWidgetHostView();
     base::ProcessHandle embedder_pid =
         embedder_view->GetRenderWidgetHost()->GetProcess()->GetHandle();
 
     shared_memory.GiveToProcess(embedder_pid, &frame_data->handle);
   }
 
   guest_->clear_damage_buffer();
   guest_->SendMessageToEmbedder(
       new BrowserPluginMsg_CompositorFrameSwapped(
           guest_->instance_id(),
           *frame,
           host_->GetRoutingID(),
+          output_surface_id,
           host_->GetProcess()->GetID()));
 }
 
 void RenderWidgetHostViewGuest::SetBounds(const gfx::Rect& rect) {
   SetSize(rect.size());
 }
 
 bool RenderWidgetHostViewGuest::OnMessageReceived(const IPC::Message& msg) {
   return platform_view_->OnMessageReceived(msg);
 }
@@ skipping 324 matching lines @@
     return;
   for (ui::GestureRecognizer::Gestures::iterator g_it = gestures->begin();
       g_it != gestures->end();
       ++g_it) {
     ForwardGestureEventToRenderer(*g_it);
   }
 }
 
 
 }  // namespace content