Add chrome.inputMethodPrivate.onImeMenuActivationChanged API.

chrome/browser/chromeos/input_method/mock_input_method_manager.h

Index: chrome/browser/chromeos/input_method/mock_input_method_manager.h
diff --git a/chrome/browser/chromeos/input_method/mock_input_method_manager.h b/chrome/browser/chromeos/input_method/mock_input_method_manager.h
index 94f16f0b5dd3f5a6c3551a939c26ccaf0216b8ac..b29d3cbf7b0ac857b08032319b9f314ede0fdcf4 100644
--- a/chrome/browser/chromeos/input_method/mock_input_method_manager.h
+++ b/chrome/browser/chromeos/input_method/mock_input_method_manager.h
@@ -79,9 +79,13 @@ class MockInputMethodManager : public InputMethodManager {
   void AddObserver(InputMethodManager::Observer* observer) override;
   void AddCandidateWindowObserver(
       InputMethodManager::CandidateWindowObserver* observer) override;
+  void AddImeMenuObserver(
+      InputMethodManager::ImeMenuObserver* observer) override;
   void RemoveObserver(InputMethodManager::Observer* observer) override;
   void RemoveCandidateWindowObserver(
       InputMethodManager::CandidateWindowObserver* observer) override;
+  void RemoveImeMenuObserver(
+      InputMethodManager::ImeMenuObserver* observer) override;
   scoped_ptr<InputMethodDescriptors> GetSupportedInputMethods() const override;
   void ActivateInputMethodMenuItem(const std::string& key) override;
   bool IsISOLevel5ShiftUsedByCurrentInputMethod() const override;
@@ -95,6 +99,7 @@ class MockInputMethodManager : public InputMethodManager {
       Profile* profile) override;
   scoped_refptr<InputMethodManager::State> GetActiveIMEState() override;
   void SetState(scoped_refptr<InputMethodManager::State> state) override;
+  void ImeMenuActivationChanged(bool is_active) override;
 
   // Sets an input method ID which will be returned by GetCurrentInputMethod().
   void SetCurrentInputMethodId(const std::string& input_method_id);