Add action for each button on opt-in IME menu.

ui/base/ime/chromeos/input_method_manager.h

Index: ui/base/ime/chromeos/input_method_manager.h
diff --git a/ui/base/ime/chromeos/input_method_manager.h b/ui/base/ime/chromeos/input_method_manager.h
index 448fc20cb67ddaef099f27020f6037b58db7e158..da7e723ab04d68d1d472fbac1d8ba1281c634a34 100644
--- a/ui/base/ime/chromeos/input_method_manager.h
+++ b/ui/base/ime/chromeos/input_method_manager.h
@@ -303,6 +303,14 @@ class UI_BASE_IME_EXPORT InputMethodManager {
   // Notify the IME menu activation changed if the current profile's activation
   // is different from previous.
   virtual void MaybeNotifyImeMenuActivationChanged() = 0;
+
+  // Overrides the keyboard url ref (stuff following '#' to the end of the
+  // string) with the given keyset (emoji, handwriting or voice).

[James Cook, 2016/09/14 21:14:28]

Nice comment.

+  virtual void OverrideKeyboardRef(const std::string& keyset) = 0;
+
+  // Returns whether the extra inputs: emoji, handwriting and voice inputs on
+  // opt-in IME menu has been enabled.
+  virtual bool IsEmojiHandwritingVoiceOnImeMenuEnabled() = 0;
 };
 
 }  // namespace input_method