Add an option in language settings for activating the IME menu.

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 b9dce24e01dbd52c4efd81b1ff1a4bc47331f5bd..1980ed692ac029aa36a7de41ff74bd2e98fec8da 100644
--- a/chrome/browser/chromeos/extensions/input_method_api.cc
+++ b/chrome/browser/chromeos/extensions/input_method_api.cc
@@ -11,6 +11,7 @@
 #include "base/lazy_instance.h"
 #include "base/values.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"
@@ -183,11 +184,21 @@ const char InputMethodAPI::kOnDictionaryLoaded[] =
 const char InputMethodAPI::kOnInputMethodChanged[] =
     "inputMethodPrivate.onChanged";
 
+// static
+const char InputMethodAPI::kOnImeMenuActivated[] =
+    "inputMethodPrivate.onImeMenuActivated";
+
+// static
+const char InputMethodAPI::kOnImeMenuDeactivated[] =
+    "inputMethodPrivate.onImeMenuDeactivated";
+
 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, kOnImeMenuActivated);
+  EventRouter::Get(context_)->RegisterObserver(this, kOnImeMenuDeactivated);
   ExtensionFunctionRegistry* registry =
       ExtensionFunctionRegistry::GetInstance();
   registry->RegisterFunction<GetInputMethodConfigFunction>();
@@ -231,6 +242,12 @@ void InputMethodAPI::OnListenerAdded(
     if (details.event_name == kOnDictionaryLoaded) {
       dictionary_event_router_->DispatchLoadedEventIfLoaded();
     }
+  } else if (details.event_name == kOnImeMenuActivated ||
+             details.event_name == kOnImeMenuDeactivated) {
+    if (!ime_menu_event_router_.get()) {
+      ime_menu_event_router_.reset(
+          new chromeos::ExtensionImeMenuEventRouter(context_));
+    }
   }
 }