Add GrabWindowSnapshotAsync tests

ui/views/test/views_test_base.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 "ui/views/test/views_test_base.h"
 
 #include "base/run_loop.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/ime/input_method_initializer.h"
 
@@ skipping 19 matching lines @@
       << "You have overrideen TearDown but never called super class's TearDown";
 }
 
 void ViewsTestBase::SetUp() {
   testing::Test::SetUp();
   setup_called_ = true;
   if (!views_delegate_.get())
     views_delegate_.reset(new TestViewsDelegate());
 #if defined(USE_AURA)
   aura_test_helper_.reset(new aura::test::AuraTestHelper(&message_loop_));
-  aura_test_helper_->SetUp();
+  bool allow_test_contexts = true;
+  aura_test_helper_->SetUp(allow_test_contexts);
   wm_state_.reset(new views::corewm::WMState);
 #endif  // USE_AURA
   ui::InitializeInputMethodForTesting();
 }
 
 void ViewsTestBase::TearDown() {
   ui::Clipboard::DestroyClipboardForCurrentThread();
 
   // Flush the message loop because we have pending release tasks
   // and these tasks if un-executed would upset Valgrind.
@@ skipping 28 matching lines @@
 
 gfx::NativeView ViewsTestBase::GetContext() {
 #if defined(USE_AURA)
   return aura_test_helper_->root_window();
 #else
   return NULL;
 #endif
 }
 
 }  // namespace views