Add latency measurement system

content/renderer/render_view_impl.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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/bind.h"
@@ skipping 1872 matching lines @@
 }
 
 WebStorageNamespace* RenderViewImpl::createSessionStorageNamespace(
     unsigned quota) {
   CHECK(session_storage_namespace_id_ !=
         dom_storage::kInvalidSessionStorageNamespaceId);
   return new WebStorageNamespaceImpl(session_storage_namespace_id_);
 }
 
 WebKit::WebCompositorOutputSurface* RenderViewImpl::createOutputSurface() {
+  CommandBufferProxyImpl* proxy = NULL;
   // Explicitly disable antialiasing for the compositor. As of the time of
   // this writing, the only platform that supported antialiasing for the
   // compositor was Mac OS X, because the on-screen OpenGL context creation
   // code paths on Windows and Linux didn't yet have multisampling support.
   // Mac OS X essentially always behaves as though it's rendering offscreen.
   // Multisampling has a heavy cost especially on devices with relatively low
   // fill rate like most notebooks, and the Mac implementation would need to
   // be optimized to resolve directly into the IOSurface shared between the
   // GPU and browser processes. For these reasons and to avoid platform
   // disparities we explicitly disable antialiasing.
   WebKit::WebGraphicsContext3D::Attributes attributes;
   attributes.antialias = false;
   attributes.shareResources = true;
   attributes.noAutomaticFlushes = true;
-  WebGraphicsContext3D* context = CreateGraphicsContext3D(attributes);
+  WebGraphicsContext3D* context = CreateGraphicsContext3D(attributes, &proxy);
   if (!context)
     return NULL;
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableSoftwareCompositingGLAdapter)) {
       // In the absence of a software-based delegating renderer, use this
       // stopgap adapter class to present the software renderer output using a
       // 3d context.
-      return new CompositorOutputSurface(routing_id(), NULL,
+      return new CompositorOutputSurface(routing_id(), NULL, NULL,
           new CompositorSoftwareOutputDeviceGLAdapter(context));
   } else
-      return new CompositorOutputSurface(routing_id(), context, NULL);
+      return new CompositorOutputSurface(routing_id(), context, proxy, NULL);
 }
 
 void RenderViewImpl::didAddMessageToConsole(
     const WebConsoleMessage& message, const WebString& source_name,
     unsigned source_line) {
   logging::LogSeverity log_severity = logging::LOG_VERBOSE;
   switch (message.level) {
     case WebConsoleMessage::LevelTip:
       log_severity = logging::LOG_VERBOSE;
       break;
@@ skipping 1940 matching lines @@
 
   if (size == preferred_size_)
     return;
 
   preferred_size_ = size;
   Send(new ViewHostMsg_DidContentsPreferredSizeChange(routing_id_,
                                                       preferred_size_));
 }
 
 WebGraphicsContext3D* RenderViewImpl::CreateGraphicsContext3D(
-    const WebGraphicsContext3D::Attributes& attributes) {
+    const WebGraphicsContext3D::Attributes& attributes,
+    CommandBufferProxyImpl** proxy) {
+  *proxy = NULL;
   if (!webview())
     return NULL;
 
   // The WebGraphicsContext3DInProcessImpl code path is used for
   // layout tests (though not through this code) as well as for
   // debugging and bringing up new ports.
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kInProcessWebGL)) {
     return webkit::gpu::WebGraphicsContext3DInProcessImpl::CreateForWebView(
         attributes, true);
   } else {
     GURL url;
     if (webview()->mainFrame())
       url = GURL(webview()->mainFrame()->document().url());
     else
       url = GURL("chrome://gpu/RenderViewImpl::CreateGraphicsContext3D");
 
     scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(
         new WebGraphicsContext3DCommandBufferImpl(
             surface_id(),
             url,
             RenderThreadImpl::current(),
             AsWeakPtr()));
 
     if (!context->Initialize(
             attributes,
             false /* bind generates resources */,
             CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE))
       return NULL;
+    *proxy = context->GetCommandBufferProxy();
     return context.release();
   }
 }
 
 // The browser process needs to know the shape of the tree, as well as the names
 // and ids of all frames. This allows it to properly route JavaScript messages
 // across processes and frames. The serialization format is described in the
 // comments of the ViewMsg_FrameTreeUpdated message.
 // This function sends those updates to the browser and updates the RVH
 // corresponding to this object. It must be called on any events that modify
@@ skipping 2586 matching lines @@
 }
 #endif
 
 void RenderViewImpl::OnReleaseDisambiguationPopupDIB(
     TransportDIB::Handle dib_handle) {
   TransportDIB* dib = TransportDIB::CreateWithHandle(dib_handle);
   RenderProcess::current()->ReleaseTransportDIB(dib);
 }
 
 }  // namespace content