Convert string16 to base::string16 in content.

content/renderer/android/content_detector.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_ANDROID_CONTENT_DETECTOR_H_
 #define CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_
 
 #include "third_party/WebKit/public/web/WebRange.h"
 #include "url/gurl.h"
 
@@ skipping 26 matching lines @@
   // position. If no content is found a null range will be returned.
   Result FindTappedContent(const blink::WebHitTestResult& hit_test);
 
  protected:
   ContentDetector() {}
 
   // Parses the input string defined by the begin/end iterators returning true
   // if the desired content is found. The start and end positions relative to
   // the input iterators are returned in start_pos and end_pos.
   // The end position is assumed to be non-inclusive.
-  virtual bool FindContent(const string16::const_iterator& begin,
-                           const string16::const_iterator& end,
+  virtual bool FindContent(const base::string16::const_iterator& begin,
+                           const base::string16::const_iterator& end,
                            size_t* start_pos,
                            size_t* end_pos,
                            std::string* content_text) = 0;
 
   // Returns the intent URL that should process the content, if any.
   virtual GURL GetIntentURL(const std::string& content_text) = 0;
 
   // Returns the maximum length of text to be extracted around the tapped
   // position in order to search for content.
   virtual size_t GetMaximumContentLength() = 0;
 
   blink::WebRange FindContentRange(const blink::WebHitTestResult& hit_test,
                                     std::string* content_text);
 
   DISALLOW_COPY_AND_ASSIGN(ContentDetector);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_