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

ash/accelerators/accelerator_controller.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/accelerators/accelerator_table.h"
 #include "ash/ash_switches.h"
 #include "ash/caps_lock_delegate.h"
 #include "ash/desktop_background/desktop_background_controller.h"
@@ skipping 409 matching lines @@
       break;
     case FOCUS_TRAY:
       if (shell->tray())
         return shell->focus_cycler()->FocusWidget(shell->tray()->GetWidget());
       break;
     case SHOW_OAK:
       if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kAshEnableOak))
         oak::ShowOakWindow();
       break;
     case NEXT_IME:
-      if (ime_control_delegate_.get()) {
-        ime_control_delegate_->HandleNextIme();
-        // We shouldn't consume Shift+Alt. crbug.com/123720
-        // TODO(yusukes): We might be able to remove the hack when issue 123856
-        // is fixed.
-        return false;
-      }
+      if (ime_control_delegate_.get())
+        return ime_control_delegate_->HandleNextIme();
       break;
     case PREVIOUS_IME:
       if (ime_control_delegate_.get())
         return ime_control_delegate_->HandlePreviousIme();
       break;
     case SWITCH_IME:
       if (ime_control_delegate_.get())
         return ime_control_delegate_->HandleSwitchIme(accelerator);
       break;
     case SELECT_WIN_0:
@@ skipping 110 matching lines @@
     // Then set this one as active.
     ActivateLauncherItem(found_index);
   }
 }
 
 bool AcceleratorController::CanHandleAccelerators() const {
   return true;
 }
 
 }  // namespace ash