Route IPC through browser when creating a viewable command buffer.

chrome/common/render_messages_internal.h

 // Copyright (c) 2011 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 <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "build/build_config.h"
@@ skipping 31 matching lines @@
 
 // TODO(mpcomplete): rename ViewMsg and ViewHostMsg to something that makes
 // more sense with our current design.
 
 // IPC_MESSAGE macros choke on extra , in the std::map, when expanding. We need
 // to typedef it to avoid that.
 // Substitution map for l10n messages.
 typedef std::map<std::string, std::string> SubstitutionMap;
 
 class Value;
+struct GPUCreateCommandBufferConfig;
 class GPUInfo;
 struct PP_Flash_NetAddress;
 class SkBitmap;
 struct ThumbnailScore;
 class WebCursor;
 
 namespace gfx {
 class Rect;
 }
 
@@ skipping 1497 matching lines @@
 // create connect to the GPU.  The browser will create the GPU process if
 // necessary, and will return a handle to the channel via
 // a GpuChannelEstablished message.
 IPC_MESSAGE_CONTROL0(ViewHostMsg_EstablishGpuChannel)
 
 // A renderer sends this to the browser process to provide a synchronization
 // point for GPU operations, in particular to make sure the GPU channel has
 // been established.
 IPC_SYNC_MESSAGE_CONTROL0_0(ViewHostMsg_SynchronizeGpu)
 
+// A renderer sends this to the browser process when it wants to
+// create a GL context associated with the given view_id.
+IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_CreateViewCommandBuffer,
+                            int32, /* render_view_id */
+                            GPUCreateCommandBufferConfig, /* init_params */
+                            int32 /* route_id */)
+
 // A renderer sends this to the browser process when it wants to start
 // a new instance of the Native Client process. The browser will launch
 // the process and return a handle to an IMC channel.
 IPC_SYNC_MESSAGE_CONTROL2_3(ViewHostMsg_LaunchNaCl,
                             std::wstring /* url for the NaCl module */,
                             int /* socket count */,
                             std::vector<nacl::FileDescriptor>
                                 /* imc channel handles */,
                             base::ProcessHandle /* NaCl process handle */,
                             base::ProcessId /* NaCl process id */)
@@ skipping 1026 matching lines @@
                      int /* request_id */,
                      PP_Flash_NetAddress /* addr */)
 
 // JavaScript related messages -----------------------------------------------
 
 // Notify the JavaScript engine in the render to change its parameters
 // while performing stress testing.
 IPC_MESSAGE_ROUTED2(ViewMsg_JavaScriptStressTestControl,
                     int /* cmd */,
                     int /* param */)