Change exo::SurfaceFactoryOwner to exo::ExoCompositorFrameSink

ash/test/ash_test_helper.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 "ash/test/ash_test_helper.h"
 
 #include "ash/accelerators/accelerator_controller_delegate_aura.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/test/material_design_controller_test_api.h"
 #include "ash/common/test/test_new_window_client.h"
@@ skipping 145 matching lines @@
   test_screenshot_delegate_ = new TestScreenshotDelegate();
   shell->accelerator_controller_delegate()->SetScreenshotDelegate(
       std::unique_ptr<ScreenshotDelegate>(test_screenshot_delegate_));
 
   WmShellTestApi().SetNewWindowClient(base::MakeUnique<TestNewWindowClient>());
 }
 
 void AshTestHelper::TearDown() {
   // Tear down the shell.
   Shell::DeleteInstance();
+  RunAllPendingInMessageLoop();

[Fady Samuel, 2016/12/01 20:38:45]

please add a comment indicating why this is necessary.

[Alex Z., 2016/12/06 20:10:40]

Done.

   material_design_state_.reset();
   test::MaterialDesignControllerTestAPI::Uninitialize();
   ash_test_environment_->TearDown();
 
   test_screenshot_delegate_ = NULL;
 
   // Remove global message center state.
   message_center::MessageCenter::Shutdown();
 
 #if defined(OS_CHROMEOS)
@@ skipping 44 matching lines @@
 bool AshTestHelper::SupportsMultipleDisplays() {
 #if defined(OS_WIN)
   return false;
 #else
   return true;
 #endif
 }
 
 }  // namespace test
 }  // namespace ash