Mojo C++ bindings: add StringTraits and ArrayTraits for STL types.

mojo/public/cpp/bindings/array_traits_wtf.h

 // 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.
 
-#ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_ARRAY_TRAITS_WTF_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_LIB_ARRAY_TRAITS_WTF_H_
+#ifndef MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_WTF_H_
+#define MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_WTF_H_
 
 #include "mojo/public/cpp/bindings/array_traits.h"
 #include "mojo/public/cpp/bindings/wtf_array.h"
 
 namespace mojo {
 
 template <typename U>
 struct ArrayTraits<WTFArray<U>> {
   using Element = U;
 
@@ skipping 10 matching lines @@
 
   static const U& GetAt(const WTFArray<U>& input, size_t index) {
     return input[index];
   }
 
   static void Resize(WTFArray<U>& input, size_t size) { input.resize(size); }
 };
 
 }  // namespace mojo
 
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_ARRAY_TRAITS_WTF_H_
+#endif  // MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_WTF_H_