Use explicit WebString <-> string{16,} conversion methods in content/renderer/pepper

content/renderer/pepper/pepper_plugin_instance_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_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 248 matching lines @@
   // send Flush callbacks to the plugin for Graphics2D/3D.
   void ViewInitiatedPaint();
 
   // Tracks all live PluginObjects.
   void AddPluginObject(PluginObject* plugin_object);
   void RemovePluginObject(PluginObject* plugin_object);
 
   base::string16 GetSelectedText(bool html);
   base::string16 GetLinkAtPosition(const gfx::Point& point);
   void RequestSurroundingText(size_t desired_number_of_characters);
-  bool StartFind(const base::string16& search_text,
+  bool StartFind(const std::string& search_text,
                  bool case_sensitive,
                  int identifier);
   void SelectFindResult(bool forward, int identifier);
   void StopFind();
 
   bool SupportsPrintInterface();
   bool IsPrintScalingDisabled();
   int PrintBegin(const blink::WebPrintParams& print_params);
   void PrintPage(int page_number, blink::WebCanvas* canvas);
   void PrintEnd();
@@ skipping 708 matching lines @@
   // view change events.
   base::WeakPtrFactory<PepperPluginInstanceImpl> view_change_weak_ptr_factory_;
   base::WeakPtrFactory<PepperPluginInstanceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPluginInstanceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_