Add latency measurement system

content/browser/renderer_host/image_transport_factory.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/browser/renderer_host/image_transport_factory.h"
 
 #include <algorithm>
 #include <map>
 
 #include "base/bind.h"
@@ skipping 303 matching lines @@
     DCHECK(CalledOnValidThread());
     DCHECK(client);
     DCHECK(!client_);
     if (context3D_.get()) {
       if (!context3D_->makeContextCurrent())
         return false;
     }
 
     client_ = client;
     output_surface_proxy_->AddSurface(this, surface_id_);
+    context3D_->GetCommandBufferProxy()->SetLatencyInfoCallback(
+        base::Bind(&BrowserCompositorOutputSurface::OnReceivedLatencyInfo,
+                   base::Unretained(this)));
     return true;
   }
 
   virtual const struct Capabilities& Capabilities() const OVERRIDE {
     DCHECK(CalledOnValidThread());
     return capabilities_;
   }
 
   virtual WebKit::WebGraphicsContext3D* Context3D() const OVERRIDE {
     DCHECK(CalledOnValidThread());
     return context3D_.get();
   }
 
   virtual cc::SoftwareOutputDevice* SoftwareDevice() const OVERRIDE {
     DCHECK(CalledOnValidThread());
     return NULL;
   }
 
   virtual void SendFrameToParentCompositor(
       const cc::CompositorFrame&) OVERRIDE {
   }
 
+  virtual void SetLatencyInfo(
+      const cc::LatencyInfo& latency_info) OVERRIDE {
+    context3D_->GetCommandBufferProxy()->SetLatencyInfo(latency_info);
+  }
+
   void OnUpdateVSyncParameters(
       base::TimeTicks timebase, base::TimeDelta interval) {
     DCHECK(CalledOnValidThread());
     DCHECK(client_);
     client_->OnVSyncParametersChanged(timebase, interval);
   }
 
  private:
+
+  void OnReceivedLatencyInfo(const cc::LatencyInfo& latency_info) {
+    client_->OnReceivedLatencyInfo(latency_info);
+  }
+
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3D_;
   int surface_id_;
   struct Capabilities capabilities_;
   cc::OutputSurfaceClient* client_;
   scoped_refptr<BrowserCompositorOutputSurfaceProxy> output_surface_proxy_;
 };
 
 void BrowserCompositorOutputSurfaceProxy::OnUpdateVSyncParameters(
     int surface_id, base::TimeTicks timebase, base::TimeDelta interval) {
   BrowserCompositorOutputSurface* surface = surface_map_.Lookup(surface_id);
@@ skipping 272 matching lines @@
   delete g_factory;
   g_factory = NULL;
 }
 
 // static
 ImageTransportFactory* ImageTransportFactory::GetInstance() {
   return g_factory;
 }
 
 }  // namespace content