Plumb cc::LatencyInfo through command buffer and output surface

content/common/gpu/image_transport_surface_win.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 "content/common/gpu/image_transport_surface.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 30 matching lines @@
   virtual std::string GetExtensions() OVERRIDE;
   virtual bool SetBackbufferAllocation(bool allocated) OVERRIDE;
   virtual void SetFrontbufferAllocation(bool allocated) OVERRIDE;
 
  protected:
   // ImageTransportSurface implementation
   virtual void OnBufferPresented(
       const AcceleratedSurfaceMsg_BufferPresented_Params& params) OVERRIDE;
   virtual void OnResizeViewACK() OVERRIDE;
   virtual void OnResize(gfx::Size size) OVERRIDE;
+  virtual void SetLatencyInfo(const cc::LatencyInfo&) OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
 
  private:
   virtual ~PbufferImageTransportSurface();
   void SendBuffersSwapped();
   void DestroySurface();
 
   // Tracks the current buffer allocation state.
   bool backbuffer_suggested_allocation_;
   bool frontbuffer_suggested_allocation_;
@@ skipping 157 matching lines @@
 void PbufferImageTransportSurface::OnResize(gfx::Size size) {
   DCHECK(backbuffer_suggested_allocation_);
   DCHECK(frontbuffer_suggested_allocation_);
   Resize(size);
 
   DestroySurface();
 
   visible_size_ = size;
 }
 
+void PbufferImageTransportSurface::SetLatencyInfo(
+    const cc::LatencyInfo&) {
+  // TODO: implement

[piman, 2013/04/03 18:05:09]

Same here, is there anything to do here beyond keeping it around and sending it
with the
GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params message?

+}
+
 gfx::Size PbufferImageTransportSurface::GetSize() {
   return GLSurfaceAdapter::GetSize();
 }
 
 }  // namespace anonymous
 
 // static
 scoped_refptr<gfx::GLSurface> ImageTransportSurface::CreateNativeSurface(
     GpuChannelManager* manager,
     GpuCommandBufferStub* stub,
@@ skipping 23 matching lines @@
 
   scoped_refptr<gfx::GLSurface> surface =
       gfx::GLSurface::CreateViewGLSurface(false, handle.handle);
   if (!surface.get())
     return surface;
   return scoped_refptr<gfx::GLSurface>(new PassThroughImageTransportSurface(
       manager, stub, surface.get(), handle.is_transport()));
 }
 
 }  // namespace content