Do not consume Alt-Shift-Up event for IME switch.

chrome/browser/chromeos/input_method/input_method_manager_impl.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 61 matching lines @@
   virtual void AddInputMethodExtension(
       const std::string& id,
       InputMethodEngineInterface* instance) OVERRIDE;
   virtual void RemoveInputMethodExtension(const std::string& id) OVERRIDE;
   virtual void GetInputMethodExtensions(
       InputMethodDescriptors* result) OVERRIDE;
   virtual void SetEnabledExtensionImes(std::vector<std::string>* ids) OVERRIDE;
   virtual void SetInputMethodLoginDefault() OVERRIDE;
   virtual void SetInputMethodLoginDefaultFromVPD(
       const std::string& locale, const std::string& layout) OVERRIDE;
-  virtual bool SwitchToNextInputMethod() OVERRIDE;
+  virtual void SwitchToNextInputMethod() OVERRIDE;
   virtual bool SwitchToPreviousInputMethod(
       const ui::Accelerator& accelerator) OVERRIDE;
   virtual bool SwitchInputMethod(const ui::Accelerator& accelerator) OVERRIDE;
   virtual InputMethodDescriptor GetCurrentInputMethod() const OVERRIDE;
   virtual bool IsISOLevel5ShiftUsedByCurrentInputMethod() const OVERRIDE;
   virtual bool IsAltGrUsedByCurrentInputMethod() const OVERRIDE;
 
   virtual ImeKeyboard* GetImeKeyboard() OVERRIDE;
   virtual InputMethodUtil* GetInputMethodUtil() OVERRIDE;
   virtual ComponentExtensionIMEManager*
@@ skipping 136 matching lines @@
   typedef std::map<Profile*, EngineMap, ProfileCompare> ProfileEngineMap;
   ProfileEngineMap profile_engine_map_;
 
   DISALLOW_COPY_AND_ASSIGN(InputMethodManagerImpl);
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_