ash: Do not use MessageLoopForUI when not needed.

ash/wm/overview/window_selector_unittest.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 <algorithm>
 #include <vector>
 
 #include "ash/accessibility_delegate.h"
 #include "ash/ash_switches.h"
 #include "ash/display/display_layout.h"
@@ skipping 19 matching lines @@
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/wm_event.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_vector.h"
 #include "base/run_loop.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/user_action_tester.h"
+#include "base/thread_task_runner_handle.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/test/test_windows.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/test/event_generator.h"
@@ skipping 1135 matching lines @@
 // TODO(flackr): Fix memory corruption crash when running locally (not failing
 // on bots). See http://crbug.com/342528.
 TEST_F(WindowSelectorTest, DISABLED_DragDropInProgress) {
   bool drag_canceled_by_test = false;
   gfx::Rect bounds(0, 0, 400, 400);
   scoped_ptr<aura::Window> window(CreateWindow(bounds));
   test::ShellTestApi shell_test_api(Shell::GetInstance());
   ash::DragDropController* drag_drop_controller =
       shell_test_api.drag_drop_controller();
   ui::OSExchangeData data;
-  base::MessageLoopForUI::current()->PostTask(FROM_HERE,
-      base::Bind(&WindowSelectorTest::ToggleOverview,
-                 base::Unretained(this)));
-  base::MessageLoopForUI::current()->PostTask(FROM_HERE,
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE,
+      base::Bind(&WindowSelectorTest::ToggleOverview, base::Unretained(this)));
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE,
       base::Bind(&CancelDrag, drag_drop_controller, &drag_canceled_by_test));
   data.SetString(base::UTF8ToUTF16("I am being dragged"));
   drag_drop_controller->StartDragAndDrop(data, window->GetRootWindow(),
       window.get(), gfx::Point(5, 5), ui::DragDropTypes::DRAG_MOVE,
       ui::DragDropTypes::DRAG_EVENT_SOURCE_MOUSE);
   RunAllPendingInMessageLoop();
   EXPECT_FALSE(drag_canceled_by_test);
   ASSERT_TRUE(IsSelecting());
   RunAllPendingInMessageLoop();
 }
@@ skipping 417 matching lines @@
   // Switch to overview mode.
   ToggleOverview();
   ASSERT_TRUE(IsSelecting());
 
   // Tap should now exit overview mode.
   generator.GestureTapAt(point_in_background_page);
   EXPECT_FALSE(IsSelecting());
 }
 
 }  // namespace ash