Convert string16 to base::string16 in content.

content/renderer/render_thread_impl.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_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 264 matching lines @@
   // instances shared based on configured audio parameters.  Lazily created on
   // first call.
   AudioRendererMixerManager* GetAudioRendererMixerManager();
 
   // AudioHardwareConfig contains audio hardware configuration for
   // renderer side clients.  Creation requires a synchronous IPC call so it is
   // lazily created on the first call.
   media::AudioHardwareConfig* GetAudioHardwareConfig();
 
 #if defined(OS_WIN)
-  void PreCacheFontCharacters(const LOGFONT& log_font, const string16& str);
+  void PreCacheFontCharacters(const LOGFONT& log_font,
+                              const base::string16& str);
 #endif
 
 #if defined(ENABLE_WEBRTC)
   WebRTCIdentityService* get_webrtc_identity_service() {
     return webrtc_identity_service_.get();
   }
 #endif
 
   // For producing custom V8 histograms. Custom histograms are produced if all
   // RenderViews share the same host, and the host is in the pre-specified set
@@ skipping 207 matching lines @@
   scoped_ptr<GamepadSharedMemoryReader> gamepad_shared_memory_reader_;
 
   base::ProcessId renderer_process_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_