Rewrite references to "wtf/" to "platform/wtf/" in //mojo.

mojo/public/cpp/bindings/lib/string_traits_wtf.cc

 // Copyright 2016 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 "mojo/public/cpp/bindings/string_traits_wtf.h"
 
 #include <string.h>
 
 #include "base/logging.h"
 #include "mojo/public/cpp/bindings/lib/array_internal.h"
-#include "third_party/WebKit/Source/wtf/text/StringUTF8Adaptor.h"
+#include "third_party/WebKit/Source/platform/wtf/text/StringUTF8Adaptor.h"
 
 namespace mojo {
 namespace {
 
 struct UTF8AdaptorInfo {
   explicit UTF8AdaptorInfo(const WTF::String& input) : utf8_adaptor(input) {
 #if DCHECK_IS_ON()
     original_size_in_bytes = input.CharactersSizeInBytes();
 #endif
   }
@@ skipping 53 matching lines @@
 
 // static
 bool StringTraits<WTF::String>::Read(StringDataView input,
                                      WTF::String* output) {
   WTF::String result = WTF::String::FromUTF8(input.storage(), input.size());
   output->Swap(result);
   return true;
 }
 
 }  // namespace mojo