Revert "Do not consume Shift+Alt in Ash to make Chromoting happy."

ash/accelerators/accelerator_controller_unittest.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 "ash/accelerators/accelerator_controller.h"
 #include "ash/caps_lock_delegate.h"
 #include "ash/ime_control_delegate.h"
 #include "ash/screenshot_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
@@ skipping 701 matching lines @@
     const ui::Accelerator shift_alt_press(ui::VKEY_MENU, true, false, true);
     const ReleaseAccelerator shift_alt(ui::VKEY_MENU, true, false, true);
     const ui::Accelerator alt_shift_press(ui::VKEY_SHIFT, true, false, true);
     const ReleaseAccelerator alt_shift(ui::VKEY_SHIFT, true, false, true);
 
     DummyImeControlDelegate* delegate = new DummyImeControlDelegate(true);
     GetController()->SetImeControlDelegate(
         scoped_ptr<ImeControlDelegate>(delegate).Pass());
     EXPECT_EQ(0, delegate->handle_next_ime_count());
     EXPECT_FALSE(GetController()->Process(shift_alt_press));
-    EXPECT_FALSE(GetController()->Process(shift_alt));  // crbug.com/123720
+    EXPECT_TRUE(GetController()->Process(shift_alt));
     EXPECT_EQ(1, delegate->handle_next_ime_count());
     EXPECT_FALSE(GetController()->Process(alt_shift_press));
-    EXPECT_FALSE(GetController()->Process(alt_shift));  // crbug.com/123720
+    EXPECT_TRUE(GetController()->Process(alt_shift));
     EXPECT_EQ(2, delegate->handle_next_ime_count());
 
     // We should NOT switch IME when e.g. Shift+Alt+X is pressed and X is
     // released.
     const ui::Accelerator shift_alt_x_press(ui::VKEY_X, true, false, true);
     const ReleaseAccelerator shift_alt_x(ui::VKEY_X, true, false, true);
 
     EXPECT_FALSE(GetController()->Process(shift_alt_press));
     EXPECT_FALSE(GetController()->Process(shift_alt_x_press));
     EXPECT_FALSE(GetController()->Process(shift_alt_x));
     EXPECT_FALSE(GetController()->Process(shift_alt));
     EXPECT_EQ(2, delegate->handle_next_ime_count());
   }
 }
 
 }  // namespace test
 }  // namespace ash