Rewrite references to "wtf/" to "platform/wtf/" in core/frame.

third_party/WebKit/Source/core/frame/DOMWindowBase64.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Samsung Electronics. 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
@@ skipping 15 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DOMWindowBase64_h
 #define DOMWindowBase64_h
 
-#include "wtf/text/WTFString.h"
+#include "platform/wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExceptionState;
 
 class DOMWindowBase64 {
  public:
   String btoa(const String& string_to_encode, ExceptionState&);
   String atob(const String& encoded_string, ExceptionState&);
 };
 
 }  // namespace blink
 
 #endif  // DOMWindowBase64_h