Add chrome.inputMethodPrivate.onImeMenuActivationChanged API.

chrome/browser/chromeos/extensions/input_method_api.cc

Index: chrome/browser/chromeos/extensions/input_method_api.cc
diff --git a/chrome/browser/chromeos/extensions/input_method_api.cc b/chrome/browser/chromeos/extensions/input_method_api.cc
index ce70b3642b55a32b673897124fcff817d1e3551c..f40a121a209d877fdf734be4967c92f9f47c0da2 100644
--- a/chrome/browser/chromeos/extensions/input_method_api.cc
+++ b/chrome/browser/chromeos/extensions/input_method_api.cc
@@ -14,6 +14,7 @@
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/chromeos/extensions/dictionary_event_router.h"
+#include "chrome/browser/chromeos/extensions/ime_menu_event_router.h"
 #include "chrome/browser/chromeos/extensions/input_method_event_router.h"
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chrome/browser/extensions/api/input_ime/input_ime_api.h"
@@ -186,11 +187,17 @@ const char InputMethodAPI::kOnDictionaryLoaded[] =
 const char InputMethodAPI::kOnInputMethodChanged[] =
     "inputMethodPrivate.onChanged";
 
+// static
+const char InputMethodAPI::kOnImeMenuActivationChanged[] =
+    "inputMethodPrivate.onImeMenuActivationChanged";
+
 InputMethodAPI::InputMethodAPI(content::BrowserContext* context)
     : context_(context) {
   EventRouter::Get(context_)->RegisterObserver(this, kOnInputMethodChanged);
   EventRouter::Get(context_)->RegisterObserver(this, kOnDictionaryChanged);
   EventRouter::Get(context_)->RegisterObserver(this, kOnDictionaryLoaded);
+  EventRouter::Get(context_)
+      ->RegisterObserver(this, kOnImeMenuActivationChanged);
   ExtensionFunctionRegistry* registry =
       ExtensionFunctionRegistry::GetInstance();
   registry->RegisterFunction<GetInputMethodConfigFunction>();
@@ -234,6 +241,11 @@ void InputMethodAPI::OnListenerAdded(
     if (details.event_name == kOnDictionaryLoaded) {
       dictionary_event_router_->DispatchLoadedEventIfLoaded();
     }
+  } else if (details.event_name == kOnImeMenuActivationChanged) {
+    if (!ime_menu_event_router_.get()) {

[Devlin, 2016/01/13 18:11:27]

Is this different than
else if (details.event_name == kOnImeMenuActivationChanged &&
!ime_menu_event_router_)
?

[Azure Wei, 2016/01/14 09:38:26]

Done.

+      ime_menu_event_router_.reset(
+          new chromeos::ExtensionImeMenuEventRouter(context_));
+    }
   }
 }