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 fe3a1d14e44935c146fc714f1f057b8ffbdb6b92..2cb3cb3eb5d608fa70fabd7dc0844c9cce1b4ccb 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 is_active) {
+  FOR_EACH_OBSERVER(InputMethodManager::ImeMenuObserver, ime_menu_observers_,
+                    ImeMenuActivationChanged(is_active));
+}
+
 void InputMethodManagerImpl::MaybeInitializeCandidateWindowController() {
   if (candidate_window_controller_.get())
     return;