cc: Use HighResNow as timebase if it is fast and reliable

content/test/web_layer_tree_view_impl_for_testing.cc

 // Copyright 2013 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/test/web_layer_tree_view_impl_for_testing.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
 #include "cc/base/switches.h"
 #include "cc/debug/test_context_provider.h"
 #include "cc/input/input_handler.h"
 #include "cc/layers/layer.h"
 #include "cc/output/output_surface.h"
 #include "cc/trees/layer_tree_host.h"
 #include "content/test/test_webkit_platform_support.h"
 #include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/WebKit/public/platform/WebLayer.h"
 #include "third_party/WebKit/public/platform/WebLayerTreeView.h"
 #include "third_party/WebKit/public/platform/WebRenderingStats.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
+#include "ui/gfx/frame_time.h"
 #include "webkit/common/gpu/test_context_provider_factory.h"
 #include "webkit/renderer/compositor_bindings/web_layer_impl.h"
 
 using WebKit::WebColor;
 using WebKit::WebGraphicsContext3D;
 using WebKit::WebRect;
 using WebKit::WebRenderingStats;
 using WebKit::WebSize;
 
 namespace webkit {
@@ skipping 87 matching lines @@
 
 void WebLayerTreeViewImplForTesting::setNeedsRedraw() {
   layer_tree_host_->SetNeedsRedraw();
 }
 
 bool WebLayerTreeViewImplForTesting::commitRequested() const {
   return layer_tree_host_->CommitRequested();
 }
 
 void WebLayerTreeViewImplForTesting::composite() {
-  layer_tree_host_->Composite(base::TimeTicks::Now());
+  layer_tree_host_->Composite(gfx::FrameTime::Now());
 }
 
 void WebLayerTreeViewImplForTesting::didStopFlinging() {}
 
 bool WebLayerTreeViewImplForTesting::compositeAndReadback(
     void* pixels, const WebRect& rect_in_device_viewport) {
   return layer_tree_host_->CompositeAndReadback(pixels,
                                                 rect_in_device_viewport);
 }
 
@@ skipping 24 matching lines @@
 }
 
 scoped_refptr<cc::ContextProvider>
 WebLayerTreeViewImplForTesting::OffscreenContextProvider() {
   // Unit tests only run in single threaded mode.
   return webkit::gpu::TestContextProviderFactory::GetInstance()->
       OffscreenContextProviderForMainThread();
 }
 
 }  // namespace webkit