Add latency measurement system

content/common/gpu/image_transport_surface.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.
 
 #ifndef CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_H_
 #define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_H_
 
 #if defined(ENABLE_GPU)
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_message.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/surface/transport_dib.h"
+#include "webkit/compositor_bindings/web_latency_info_impl.h"
 
 struct GpuHostMsg_AcceleratedSurfaceNew_Params;
 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
 struct GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params;
 struct GpuHostMsg_AcceleratedSurfaceRelease_Params;
 
 namespace gfx {
 class GLSurface;
 }
 
@@ skipping 22 matching lines @@
 // making sure outside events reach the ImageTransportSurface and
 // allowing the ImageTransportSurface to send events to the outside world.
 
 class ImageTransportSurface {
  public:
   ImageTransportSurface();
 
   virtual void OnBufferPresented(uint64 surface_handle, uint32 sync_point) = 0;
   virtual void OnResizeViewACK() = 0;
   virtual void OnResize(gfx::Size size) = 0;
+  virtual void SetLatencyInfo(
+      const WebKit::WebLatencyInfoImpl& latency_info) = 0;
 
   // Creates the appropriate surface depending on the GL implementation.
   static scoped_refptr<gfx::GLSurface>
       CreateSurface(GpuChannelManager* manager,
                     GpuCommandBufferStub* stub,
                     const gfx::GLSurfaceHandle& handle);
 
   virtual gfx::Size GetSize() = 0;
 
  protected:
@@ skipping 34 matching lines @@
   void SendAcceleratedSurfaceBuffersSwapped(
       GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params params);
   void SendAcceleratedSurfacePostSubBuffer(
       GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params params);
   void SendAcceleratedSurfaceRelease(
       GpuHostMsg_AcceleratedSurfaceRelease_Params params);
   void SendResizeView(const gfx::Size& size);
   void SendUpdateVSyncParameters(
       base::TimeTicks timebase, base::TimeDelta interval);
 
+  void SendLatencyInfo(const WebKit::WebLatencyInfoImpl& latency_info);
+
   // Whether or not we should execute more commands.
   void SetScheduled(bool is_scheduled);
 
   void DeferToFence(base::Closure task);
 
   void SetPreemptByCounter(
       scoped_refptr<gpu::RefCountedCounter> preempt_by_counter);
 
   // Make the surface's context current.
   bool MakeCurrent();
 
   // Set the default swap interval on the surface.
   static void SetSwapInterval(gfx::GLContext* context);
 
   void Suspend();
 
   GpuChannelManager* manager() const { return manager_; }
   GpuCommandBufferStub* stub() const { return stub_.get(); }
 
  private:
   gpu::GpuScheduler* Scheduler();
   gpu::gles2::GLES2Decoder* Decoder();
 
   // IPC::Message handlers.
   void OnBufferPresented(uint64 surface_handle, uint32 sync_point);
   void OnResizeViewACK();
+  void OnFrameDisplayed(const WebKit::WebLatencyInfoImpl& latency_info);
 
   // Backbuffer resize callback.
   void Resize(gfx::Size size);
 
+  void SetLatencyInfo(const WebKit::WebLatencyInfoImpl& latency_info);
+
   // Weak pointers that point to objects that outlive this helper.
   ImageTransportSurface* surface_;
   GpuChannelManager* manager_;
 
   base::WeakPtr<GpuCommandBufferStub> stub_;
   int32 route_id_;
   gfx::PluginWindowHandle handle_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageTransportHelper);
 };
@@ skipping 15 matching lines @@
   virtual bool SwapBuffers() OVERRIDE;
   virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE;
   virtual bool OnMakeCurrent(gfx::GLContext* context) OVERRIDE;
 
   // ImageTransportSurface implementation.
   virtual void OnBufferPresented(uint64 surface_handle,
                                  uint32 sync_point) OVERRIDE;
   virtual void OnResizeViewACK() OVERRIDE;
   virtual void OnResize(gfx::Size size) OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
+  virtual void SetLatencyInfo(
+      const WebKit::WebLatencyInfoImpl& latency_info) OVERRIDE;
 
  protected:
   virtual ~PassThroughImageTransportSurface();
 
   // If updated vsync parameters can be determined, send this information to
   // the browser.
   virtual void SendVSyncUpdateIfAvailable();
 
  private:
   scoped_ptr<ImageTransportHelper> helper_;
   gfx::Size new_size_;
   bool transport_;
   bool did_set_swap_interval_;
+  WebKit::WebLatencyInfoImpl latency_info_;
 
   DISALLOW_COPY_AND_ASSIGN(PassThroughImageTransportSurface);
 };
 
 }  // namespace content
 
 #endif  // defined(ENABLE_GPU)
 
 #endif  // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_H_