Revert 93066 - Execute all GL commands up to the put offset reported by a each flush.This means g...

content/common/gpu/gpu_command_buffer_stub.h

Index: content/common/gpu/gpu_command_buffer_stub.h
===================================================================
--- content/common/gpu/gpu_command_buffer_stub.h	(revision 93137)
+++ content/common/gpu/gpu_command_buffer_stub.h	(working copy)
@@ -51,9 +51,6 @@
   // IPC::Message::Sender implementation:
   virtual bool Send(IPC::Message* msg);
 
-  // Whether this command buffer can currently handle IPC messages.
-  bool IsScheduled();
-
   // Get the GLContext associated with this object.
   gpu::GpuScheduler* scheduler() const { return scheduler_.get(); }
 
@@ -90,6 +87,10 @@
   void AcceleratedSurfaceBuffersSwapped(uint64 swap_buffers_count);
 #endif  // defined(OS_MACOSX) || defined(TOUCH_UI)
 
+  // Called when the command buffer was destroyed, and the stub should now
+  // unblock itself and handle pending messages.
+  void CommandBufferWasDestroyed();
+
   // Register a callback to be Run() whenever the underlying scheduler receives
   // a set_token() call.  The callback will be Run() with the just-set token as
   // its only parameter.  Multiple callbacks may be registered.
@@ -109,7 +110,6 @@
                uint32 flush_count,
                IPC::Message* reply_message);
   void OnAsyncFlush(int32 put_offset, uint32 flush_count);
-  void OnRescheduled();
   void OnCreateTransferBuffer(int32 size,
                               int32 id_request,
                               IPC::Message* reply_message);
@@ -126,6 +126,8 @@
 
   void OnSwapBuffers();
   void OnCommandProcessed();
+  void HandleDeferredMessages();
+  void OnScheduled();
   void OnParseError();
 
 #if defined(OS_MACOSX)
@@ -162,6 +164,7 @@
 
   scoped_ptr<gpu::CommandBufferService> command_buffer_;
   scoped_ptr<gpu::GpuScheduler> scheduler_;
+  std::queue<IPC::Message*> deferred_messages_;
   std::vector<base::Callback<void(int32)> > set_token_callbacks_;
 
   // SetParent may be called before Initialize, in which case we need to keep