Add base:: to string16s in android_webview/.

android_webview/native/state_serializer.cc

 // 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.
 
 #include "android_webview/native/state_serializer.h"
 
 #include <string>
 
 #include "base/memory/scoped_vector.h"
 #include "base/pickle.h"
@@ skipping 208 matching lines @@
       return false;
     if (!iterator->ReadInt(&policy))
       return false;
 
     referrer.url = GURL(referrer_url);
     referrer.policy = static_cast<blink::WebReferrerPolicy>(policy);
     entry->SetReferrer(referrer);
   }
 
   {
-    string16 title;
+    base::string16 title;
     if (!iterator->ReadString16(&title))
       return false;
     entry->SetTitle(title);
   }
 
   {
     string content_state;
     if (!iterator->ReadString(&content_state))
       return false;
     entry->SetPageState(
@@ skipping 41 matching lines @@
       return false;
     entry->SetHttpStatusCode(http_status_code);
   }
 
   return true;
 }
 
 }  // namespace internal
 
 }  // namespace android_webview