[Mac] Implement the system dictionary popup by implementing NSTextInput methods.

chrome/renderer/render_view.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_RENDERER_RENDER_VIEW_H_
 #define CHROME_RENDERER_RENDER_VIEW_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 922 matching lines @@
                        const std::string& source_lang,
                        const std::string& target_lang);
   void OnUndo();
   void OnUpdateBrowserWindowId(int window_id);
   void OnUpdateTargetURLAck();
   void OnUpdateWebPreferences(const WebPreferences& prefs);
 #if defined(OS_MACOSX)
   void OnWindowFrameChanged(const gfx::Rect& window_frame,
                             const gfx::Rect& view_frame);
   void OnSelectPopupMenuItem(int selected_index);
+  void OnCharacterIndexForPoint(gfx::Point point);
+  void OnFirstRectForCharacterRange(uint location, uint length);
+  void OnStringForRange(uint location, uint length);
 #endif
   void OnZoom(PageZoom::Function function);
   void OnJavaScriptStressTestControl(int cmd, int param);
 
   // Adding a new message handler? Please add it in alphabetical order above
   // and put it in the same position in the .cc file.
 
   // Misc private functions ----------------------------------------------------
 
   // Helper method that returns if the user wants to block content of type
@@ skipping 511 matching lines @@
   // bunch of stuff, you should probably create a helper class and put your
   // data and methods on that to avoid bloating RenderView more.  You can use
   // the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };
 
 #endif  // CHROME_RENDERER_RENDER_VIEW_H_