Remove candidate show/hide/update related code

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 13e52c43e3bf21449b88d485d9741f0cb837ce5d..11fd7d3b680d441a1e60aed3d0f23ba268a7b3e0 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -739,10 +739,6 @@ bool RenderWidget::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ViewMsg_WasHidden, OnWasHidden)
     IPC_MESSAGE_HANDLER(ViewMsg_WasShown, OnWasShown)
     IPC_MESSAGE_HANDLER(ViewMsg_SetInputMethodActive, OnSetInputMethodActive)
-    IPC_MESSAGE_HANDLER(ViewMsg_CandidateWindowShown, OnCandidateWindowShown)
-    IPC_MESSAGE_HANDLER(ViewMsg_CandidateWindowUpdated,
-                        OnCandidateWindowUpdated)
-    IPC_MESSAGE_HANDLER(ViewMsg_CandidateWindowHidden, OnCandidateWindowHidden)
     IPC_MESSAGE_HANDLER(ViewMsg_Repaint, OnRepaint)
     IPC_MESSAGE_HANDLER(ViewMsg_SetTextDirection, OnSetTextDirection)
     IPC_MESSAGE_HANDLER(ViewMsg_Move_ACK, OnRequestMoveAck)
@@ -1659,15 +1655,6 @@ void RenderWidget::OnSetInputMethodActive(bool is_active) {
   input_method_is_active_ = is_active;
 }
 
-void RenderWidget::OnCandidateWindowShown() {
-}
-
-void RenderWidget::OnCandidateWindowUpdated() {
-}
-
-void RenderWidget::OnCandidateWindowHidden() {
-}
-
 void RenderWidget::OnImeSetComposition(
     const base::string16& text,
     const std::vector<WebCompositionUnderline>& underlines,