Change the canonical way to include the C bindings headers to <mojo/bindings/*.h>.

mojo/public/c/include/mojo/bindings/string.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_C_BINDINGS_STRING_H_
-#define MOJO_PUBLIC_C_BINDINGS_STRING_H_
+#ifndef MOJO_PUBLIC_C_INCLUDE_MOJO_BINDINGS_STRING_H_
+#define MOJO_PUBLIC_C_INCLUDE_MOJO_BINDINGS_STRING_H_
 
-#include "mojo/public/c/bindings/array.h"
-#include "mojo/public/c/bindings/buffer.h"
+#include <mojo/bindings/array.h>
+#include <mojo/bindings/buffer.h>
 
 // A mojom string is a mojom array of UTF-8 chars that need not be
 // null-terminated.
 struct MojomStringHeader {
   struct MojomArrayHeader chars;
 };
 MOJO_STATIC_ASSERT(sizeof(struct MojomStringHeader) ==
                        sizeof(struct MojomArrayHeader),
                    "MojomStringHeader must be just a MojomArrayHeader.");
 
 union MojomStringHeaderPtr {
   struct MojomStringHeader* ptr;
   uint64_t offset;
 };
 MOJO_STATIC_ASSERT(sizeof(union MojomStringHeaderPtr) == 8,
                    "MojomStringHeaderPtr must be 8 byes.");
 
-#endif  // MOJO_PUBLIC_C_BINDINGS_STRING_H_
+#endif  // MOJO_PUBLIC_C_INCLUDE_MOJO_BINDINGS_STRING_H_