Add candidatewindow* events related IPCs

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 36a63e3d41ca647e9f75102f9dc6e201828e70c7..66e2e9a136e61923a381cedd69ef59c176fb171e 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -312,6 +312,11 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   // display input method windows under the cursor.)
   void SetInputMethodActive(bool activate);
 
+  // Notifies the renderer changes of IME candidate window state.
+  void CandidateWindowShown();
+  void CandidateWindowUpdated();
+  void CandidateWindowHidden();
+
   // Update the composition node of the renderer (or WebKit).
   // WebKit has a special node (a composition node) for input method to change
   // its text without affecting any other DOM nodes. When the input method