Convert string16 to base::string16 in content.

content/renderer/render_widget.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 333 matching lines @@
   virtual void OnWasSwappedOut();
   void OnUpdateRectAck();
   void OnCreateVideoAck(int32 video_id);
   void OnUpdateVideoAck(int32 video_id);
   void OnRequestMoveAck();
   void OnSetInputMethodActive(bool is_active);
   void OnCandidateWindowShown();
   void OnCandidateWindowUpdated();
   void OnCandidateWindowHidden();
   virtual void OnImeSetComposition(
-      const string16& text,
+      const base::string16& text,
       const std::vector<blink::WebCompositionUnderline>& underlines,
       int selection_start,
       int selection_end);
-  virtual void OnImeConfirmComposition(const string16& text,
+  virtual void OnImeConfirmComposition(const base::string16& text,
                                        const gfx::Range& replacement_range,
                                        bool keep_selection);
   void OnPaintAtSize(const TransportDIB::Handle& dib_id,
                      int tag,
                      const gfx::Size& page_size,
                      const gfx::Size& desired_size);
   void OnRepaint(gfx::Size size_to_paint);
   void OnSyntheticGestureCompleted();
   void OnSetTextDirection(blink::WebTextDirection direction);
   void OnGetFPS();
@@ skipping 413 matching lines @@
   float popup_origin_scale_for_emulation_;
 
   scoped_ptr<ResizingModeSelector> resizing_mode_selector_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_