Add chrome.inputMethodPrivate.onImeMenuActivationChanged API.

chrome/browser/chromeos/input_method/mock_input_method_manager.cc

Index: chrome/browser/chromeos/input_method/mock_input_method_manager.cc
diff --git a/chrome/browser/chromeos/input_method/mock_input_method_manager.cc b/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
index d1255297423556c66771686aa1fad8b7935453a2..faae106f9a7d44db5354fe14d66f4c71b80bff8a 100644
--- a/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
+++ b/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
@@ -41,6 +41,9 @@ void MockInputMethodManager::AddCandidateWindowObserver(
     InputMethodManager::CandidateWindowObserver* observer) {
 }
 
+void MockInputMethodManager::AddImeMenuObserver(
+    InputMethodManager::ImeMenuObserver* observer) {}
+
 void MockInputMethodManager::RemoveObserver(
     InputMethodManager::Observer* observer) {
   ++remove_observer_count_;
@@ -50,6 +53,9 @@ void MockInputMethodManager::RemoveCandidateWindowObserver(
     InputMethodManager::CandidateWindowObserver* observer) {
 }
 
+void MockInputMethodManager::RemoveImeMenuObserver(
+    InputMethodManager::ImeMenuObserver* observer) {}
+
 scoped_ptr<InputMethodDescriptors>
 MockInputMethodManager::GetSupportedInputMethods() const {
   scoped_ptr<InputMethodDescriptors> result(new InputMethodDescriptors);
@@ -241,5 +247,7 @@ void MockInputMethodManager::SetCurrentInputMethodId(
   state_->current_input_method_id = input_method_id;
 }
 
+void MockInputMethodManager::ImeMenuActivationChanged(bool activation) {}
+
 }  // namespace input_method
 }  // namespace chromeos