Cancel composition on mouse clicking.

content/browser/renderer_host/render_widget_host_view_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_view_win.h"
 
 #include <algorithm>
 #include <map>
 #include <peninputpanel_i.c>
 #include <stack>
@@ skipping 1800 matching lines @@
   // RenderViewHostHWND as there is no way to retrieve it from the HWND.
 
   // Don't forward if the container is a popup or fullscreen widget.
   if (!is_fullscreen_ && !close_on_deactivate_) {
     switch (message) {
       case WM_LBUTTONDOWN:
       case WM_MBUTTONDOWN:
       case WM_RBUTTONDOWN:
         // Finish the ongoing composition whenever a mouse click happens.
         // It matches IE's behavior.
-        ime_input_.CleanupComposition(m_hWnd);
+        if (base::win::IsTsfAwareRequired()) {
+          ui::TsfBridge::GetInstance()->CancelComposition();
+        } else {
+          ime_input_.CleanupComposition(m_hWnd);
+        }
         // Fall through.
       case WM_MOUSEMOVE:
       case WM_MOUSELEAVE: {
         // Give the WebContentsImpl first crack at the message. It may want to
         // prevent forwarding to the renderer if some higher level browser
         // functionality is invoked.
         LPARAM parent_msg_lparam = lparam;
         if (message != WM_MOUSELEAVE) {
           // For the messages except WM_MOUSELEAVE, before forwarding them to
           // parent window, we should adjust cursor position from client
@@ skipping 1247 matching lines @@
   // receive a focus change in the context of a pointer down message, it means
   // that the pointer down message occurred on the edit field and we should
   // display the on screen keyboard
   if (!received_focus_change_after_pointer_down_ && virtual_keyboard_)
     DisplayOnScreenKeyboardIfNeeded();
   received_focus_change_after_pointer_down_ = false;
   pointer_down_context_ = false;
 }
 
 }  // namespace content