[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/bindings/api_binding_bridge.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_BRIDGE_H_
-#define EXTENSIONS_RENDERER_API_BINDING_BRIDGE_H_
+#ifndef EXTENSIONS_RENDERER_BINDINGS_API_BINDING_BRIDGE_H_
+#define EXTENSIONS_RENDERER_BINDINGS_API_BINDING_BRIDGE_H_
 
 #include <string>
 
 #include "base/macros.h"
-#include "extensions/renderer/api_binding_types.h"
+#include "extensions/renderer/bindings/api_binding_types.h"
 #include "gin/wrappable.h"
 #include "v8/include/v8.h"
 
 namespace extensions {
 class APIBindingHooks;
 
 // An object that serves as a bridge between the current JS-centric bindings and
 // the new native bindings system. This basically needs to conform to the public
 // methods of the Binding prototype in binding.js.
 class APIBindingBridge final : public gin::Wrappable<APIBindingBridge> {
@@ skipping 31 matching lines @@
   std::string context_type_;
 
   // A function to run JS safely.
   binding::RunJSFunction run_js_;
 
   DISALLOW_COPY_AND_ASSIGN(APIBindingBridge);
 };
 
 }  // namespace extensions
 
-#endif  // EXTENSIONS_RENDERER_API_BINDING_BRIDGE_H_
+#endif  // EXTENSIONS_RENDERER_BINDINGS_API_BINDING_BRIDGE_H_