Convert string16 to base::string16 in content.

content/common/indexed_db/indexed_db_key.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_COMMON_INDEXED_DB_INDEXED_DB_KEY_H_
 #define CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebIDBTypes.h"
 
 namespace blink {
 class WebIDBKey;
 }
 
 namespace content {
 
 class CONTENT_EXPORT IndexedDBKey {
  public:
   typedef std::vector<IndexedDBKey> KeyArray;
 
   IndexedDBKey();  // Defaults to blink::WebIDBKeyTypeInvalid.
   IndexedDBKey(blink::WebIDBKeyType);  // must be Null or Invalid
   explicit IndexedDBKey(const KeyArray& array);
   explicit IndexedDBKey(const std::string& binary);
-  explicit IndexedDBKey(const string16& str);
+  explicit IndexedDBKey(const base::string16& str);
   IndexedDBKey(double number,
                blink::WebIDBKeyType type);  // must be date or number
   ~IndexedDBKey();
 
   bool IsValid() const;
 
   int Compare(const IndexedDBKey& other) const;
   bool IsLessThan(const IndexedDBKey& other) const;
   bool IsEqual(const IndexedDBKey& other) const;
 
   blink::WebIDBKeyType type() const { return type_; }
   const std::vector<IndexedDBKey>& array() const { return array_; }
   const std::string& binary() const { return binary_; }
-  const string16& string() const { return string_; }
+  const base::string16& string() const { return string_; }
   double date() const { return date_; }
   double number() const { return number_; }
 
   size_t size_estimate() const { return size_estimate_; }
 
  private:
   blink::WebIDBKeyType type_;
   std::vector<IndexedDBKey> array_;
   std::string binary_;
-  string16 string_;
+  base::string16 string_;
   double date_;
   double number_;
 
   size_t size_estimate_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_H_