Add ink drop ripple to overview mode button

chrome/browser/ui/ash/multi_user/user_switch_util_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 "ash/common/system/chromeos/screen_security/screen_tray_item.h"
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/wm/overview/window_selector_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/test/ash_test_base.h"
 #include "base/run_loop.h"
@@ skipping 72 matching lines @@
 
   // Methods needed to test with overview mode.
   const WindowSelectorController* window_selector_controller() const {
     return WmShell::Get()->window_selector_controller();
   }
   WindowSelectorController* window_selector_controller() {
     return const_cast<WindowSelectorController*>(
         const_cast<const TrySwitchingUserTest*>(this)
             ->window_selector_controller());
   }
-  void ToggleOverview() { window_selector_controller()->ToggleOverview(); }
+  bool ToggleOverview() {
+    return window_selector_controller()->ToggleOverview();
+  }
   bool IsSelecting() const {
     return window_selector_controller()->IsSelecting();
   }
 
   // Various counter accessors.
   int stop_capture_callback_hit_count() const {
     return stop_capture_callback_hit_count_;
   }
   int stop_share_callback_hit_count() const {
     return stop_share_callback_hit_count_;
@@ skipping 131 matching lines @@
   EXPECT_EQ(1, switch_callback_hit_count());
   EXPECT_EQ(1, stop_capture_callback_hit_count());
   EXPECT_EQ(1, stop_share_callback_hit_count());
 }
 
 // Test that overview mode is dismissed before switching user profile.
 TEST_F(TrySwitchingUserTest, OverviewModeDismissed) {
   EXPECT_EQ(0, switch_callback_hit_count());
   gfx::Rect bounds(0, 0, 100, 100);
   std::unique_ptr<aura::Window> w(CreateTestWindowInShellWithBounds(bounds));
-  ToggleOverview();
+  ASSERT_TRUE(ToggleOverview());
   ASSERT_TRUE(IsSelecting());
   SwitchUser(TrySwitchingUserTest::NO_DIALOG);
   ASSERT_FALSE(IsSelecting());
   EXPECT_EQ(1, switch_callback_hit_count());
 }
 
 }  // namespace ash