Hook up ui::Compositor to Display's BeginFrameSource

content/browser/compositor/software_browser_compositor_output_surface_unittest.cc

 // Copyright 2014 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/compositor/software_browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 91 matching lines @@
   output_surface_.reset();
   compositor_.reset();
   ui::TerminateContextFactoryForTests();
 }
 
 std::unique_ptr<content::BrowserCompositorOutputSurface>
 SoftwareBrowserCompositorOutputSurfaceTest::CreateSurface(
     std::unique_ptr<cc::SoftwareOutputDevice> device) {
   return std::unique_ptr<content::BrowserCompositorOutputSurface>(
       new content::SoftwareBrowserCompositorOutputSurface(
-          std::move(device), compositor_->vsync_manager()));
+          std::move(device), compositor_->vsync_manager(),
+          message_loop_->task_runner().get()));
 }
 
 TEST_F(SoftwareBrowserCompositorOutputSurfaceTest, NoVSyncProvider) {
   cc::FakeOutputSurfaceClient output_surface_client;
   std::unique_ptr<cc::SoftwareOutputDevice> software_device(
       new cc::SoftwareOutputDevice());
   output_surface_ = CreateSurface(std::move(software_device));
   CHECK(output_surface_->BindToClient(&output_surface_client));
 
   cc::CompositorFrame frame;
@@ skipping 13 matching lines @@
   FakeVSyncProvider* vsync_provider = static_cast<FakeVSyncProvider*>(
       output_surface_->software_device()->GetVSyncProvider());
   EXPECT_EQ(0, vsync_provider->call_count());
 
   cc::CompositorFrame frame;
   output_surface_->SwapBuffers(&frame);
 
   EXPECT_EQ(1, output_surface_client.swap_count());
   EXPECT_EQ(1, vsync_provider->call_count());
 }