Add base:: to string16 in Source/testing/runner/.

Source/testing/runner/WebTestProxy.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 305 matching lines @@
     return result;
 }
 
 struct ToLower {
     char16 operator()(char16 c) { return tolower(c); }
 };
 
 // Returns True if item1 < item2.
 bool HistoryItemCompareLess(const WebHistoryItem& item1, const WebHistoryItem& item2)
 {
-    string16 target1 = item1.target();
-    string16 target2 = item2.target();
+    base::string16 target1 = item1.target();
+    base::string16 target2 = item2.target();
     std::transform(target1.begin(), target1.end(), target1.begin(), ToLower());
     std::transform(target2.begin(), target2.end(), target2.begin(), ToLower());
     return target1 < target2;
 }
 
 string dumpHistoryItem(const WebHistoryItem& item, int indent, bool isCurrent)
 {
     string result;
 
     if (isCurrent) {
@@ skipping 1057 matching lines @@
 
 void WebTestProxyBase::resetInputMethod()
 {
     // If a composition text exists, then we need to let the browser process
     // to cancel the input method's ongoing composition session.
     if (m_webWidget)
         m_webWidget->confirmComposition();
 }
 
 }