[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/bindings/api_binding_hooks.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 EXTENSIONS_RENDERER_API_BINDING_HOOKS_H_
-#define EXTENSIONS_RENDERER_API_BINDING_HOOKS_H_
+#ifndef EXTENSIONS_RENDERER_BINDINGS_API_BINDING_HOOKS_H_
+#define EXTENSIONS_RENDERER_BINDINGS_API_BINDING_HOOKS_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "extensions/renderer/api_binding_types.h"
+#include "extensions/renderer/bindings/api_binding_types.h"
 #include "v8/include/v8.h"
 
 namespace extensions {
 class APIBindingHooksDelegate;
 class APITypeReferenceMap;
 class APISignature;
 
 // A class to register custom hooks for given API calls that need different
 // handling. An instance exists for a single API, but can be used across
 // multiple contexts (but only on the same thread).
@@ skipping 72 matching lines @@
   // script is disabled.
   binding::RunJSFunctionSync run_js_;
 
   std::unique_ptr<APIBindingHooksDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(APIBindingHooks);
 };
 
 }  // namespace extensions
 
-#endif  // EXTENSIONS_RENDERER_API_BINDING_HOOKS_H_
+#endif  // EXTENSIONS_RENDERER_BINDINGS_API_BINDING_HOOKS_H_