Associate an id with the output surface to handle lost contexts

content/common/browser_plugin/browser_plugin_messages.h

 // 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.
 
 // Multiply-included message header, no traditional include guard.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/process.h"
@@ skipping 191 matching lines @@
 // to specify the location in the command stream when the compositor
 // is no longer using it.
 IPC_MESSAGE_ROUTED5(BrowserPluginHostMsg_BuffersSwappedACK,
                     int /* instance_id */,
                     int /* route_id */,
                     int /* gpu_host_id */,
                     std::string /* mailbox_name */,
                     uint32 /* sync_point */)
 
 // Acknowledge that we presented an ubercomp frame.
-IPC_MESSAGE_ROUTED4(BrowserPluginHostMsg_CompositorFrameACK,
+IPC_MESSAGE_ROUTED5(BrowserPluginHostMsg_CompositorFrameACK,
                     int /* instance_id */,
                     int /* route_id */,
+                    uint32 /* output_surface_id */,
                     int /* renderer_host_id */,
                     cc::CompositorFrameAck /* ack */)
 
 // When a BrowserPlugin has been removed from the embedder's DOM, it informs
 // the browser process to cleanup the guest.
 IPC_MESSAGE_ROUTED1(BrowserPluginHostMsg_PluginDestroyed,
                     int /* instance_id */)
 
 // Tells the guest it has been shown or hidden.
 IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_SetVisibility,
@@ skipping 134 matching lines @@
                      std::string /* name */)
 
 // Guest renders into an FBO with textures provided by the embedder.
 // When HW accelerated buffers are swapped in the guest, the message
 // is forwarded to the embedder to notify it of a new texture
 // available for compositing.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_BuffersSwapped,
                      int /* instance_id */,
                      BrowserPluginMsg_BuffersSwapped_Params)
 
-IPC_MESSAGE_CONTROL4(BrowserPluginMsg_CompositorFrameSwapped,
+IPC_MESSAGE_CONTROL5(BrowserPluginMsg_CompositorFrameSwapped,
                      int /* instance_id */,
                      cc::CompositorFrame /* frame */,
                      int /* route_id */,
+                     uint32 /* output_surface_id */,
                      int /* renderer_host_id */)
 
 // When the guest requests permission, the browser process forwards this
 // request to the embeddder through this message.
 IPC_MESSAGE_CONTROL4(BrowserPluginMsg_RequestPermission,
                      int /* instance_id */,
                      BrowserPluginPermissionType /* permission_type */,
                      int /* request_id */,
                      base::DictionaryValue /* request_info */)
 
 // Forwards a PointerLock Unlock request to the BrowserPlugin.
 IPC_MESSAGE_CONTROL1(BrowserPluginMsg_UnlockMouse, int /* instance_id */)