Add chrome.inputMethodPrivate.onImeMenuActivationChanged API.

chrome/browser/chromeos/input_method/input_method_manager_impl.cc

Index: chrome/browser/chromeos/input_method/input_method_manager_impl.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_manager_impl.cc b/chrome/browser/chromeos/input_method/input_method_manager_impl.cc
index f5ed1148e181b83cc0fdd726c491154270b66fd6..d7916bd21bf9f484a335d1c1c19cd41b7ee14fae 100644
--- a/chrome/browser/chromeos/input_method/input_method_manager_impl.cc
+++ b/chrome/browser/chromeos/input_method/input_method_manager_impl.cc
@@ -889,6 +889,11 @@ void InputMethodManagerImpl::AddCandidateWindowObserver(
   candidate_window_observers_.AddObserver(observer);
 }
 
+void InputMethodManagerImpl::AddImeMenuObserver(
+    InputMethodManager::ImeMenuObserver* observer) {
+  ime_menu_observers_.AddObserver(observer);
+}
+
 void InputMethodManagerImpl::RemoveObserver(
     InputMethodManager::Observer* observer) {
   observers_.RemoveObserver(observer);
@@ -899,6 +904,11 @@ void InputMethodManagerImpl::RemoveCandidateWindowObserver(
   candidate_window_observers_.RemoveObserver(observer);
 }
 
+void InputMethodManagerImpl::RemoveImeMenuObserver(
+    InputMethodManager::ImeMenuObserver* observer) {
+  ime_menu_observers_.RemoveObserver(observer);
+}
+
 InputMethodManager::UISessionState InputMethodManagerImpl::GetUISessionState() {
   return ui_session_;
 }
@@ -1153,6 +1163,11 @@ void InputMethodManagerImpl::CandidateWindowClosed() {
                     CandidateWindowClosed(this));
 }
 
+void InputMethodManagerImpl::ImeMenuActivationChanged(bool activation) {
+  FOR_EACH_OBSERVER(InputMethodManager::ImeMenuObserver, ime_menu_observers_,
+                    ImeMenuActivationChanged(activation));
+}
+
 void InputMethodManagerImpl::MaybeInitializeCandidateWindowController() {
   if (candidate_window_controller_.get())
     return;