Added GPU process "echo" IPC message.

webkit/plugins/ppapi/plugin_delegate.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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 #define WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 
 #include <string>
 
 #include "base/callback_old.h"
@@ skipping 12 matching lines @@
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ui/gfx/size.h"
 #include "webkit/fileapi/file_system_types.h"
 #include "webkit/plugins/ppapi/dir_contents.h"
 #include "webkit/quota/quota_types.h"
 
 class AudioMessageFilter;
 class GURL;
 class SkBitmap;
+class Task;
 
 namespace base {
 class MessageLoopProxy;
 class Time;
 }
 
 namespace content {
 class P2PSocketDispatcher;
 }
 
@@ skipping 115 matching lines @@
     virtual TransportDIB* GetTransportDIB() const = 0;
   };
 
   class PlatformContext3D {
    public:
     virtual ~PlatformContext3D() {}
 
     // Initialize the context.
     virtual bool Init(const int32* attrib_list) = 0;
 
-    // Set an optional callback that will be invoked when the side effects of
-    // a SwapBuffers call become visible to the compositor. Takes ownership
-    // of the callback.
-    virtual void SetSwapBuffersCallback(Callback0::Type* callback) = 0;
-
     // If the plugin instance is backed by an OpenGL, return its ID in the
     // compositors namespace. Otherwise return 0. Returns 0 by default.
     virtual unsigned GetBackingTextureId() = 0;
 
     // This call will return the address of the command buffer for this context
     // that is constructed in Initialize() and is valid until this context is
     // destroyed.
     virtual ::gpu::CommandBuffer* GetCommandBuffer() = 0;
 
     // If the command buffer is routed in the GPU channel, return the route id.
     // Otherwise return 0.
     virtual int GetCommandBufferRouteId() = 0;
 
     // Set an optional callback that will be invoked when the context is lost
     // (e.g. gpu process crash). Takes ownership of the callback.
     virtual void SetContextLostCallback(Callback0::Type* callback) = 0;
+
+    // Run the task once the channel has been flushed. Takes care of deleting
+    // the task whether the echo succeeds or not.
+    virtual bool Echo(Task* task) = 0;
   };
 
   class PlatformAudio {
    public:
     class Client {
      protected:
       virtual ~Client() {}
 
      public:
       // Called when the stream is created.
@@ skipping 246 matching lines @@
   virtual base::SharedMemory* CreateAnonymousSharedMemory(uint32_t size) = 0;
 
   // Returns the current preferences.
   virtual ::ppapi::Preferences GetPreferences() = 0;
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_