[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/declarative_content_hooks_delegate.cc

 // Copyright 2017 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 "extensions/renderer/declarative_content_hooks_delegate.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "extensions/common/api/declarative/declarative_constants.h"
-#include "extensions/renderer/api_type_reference_map.h"
-#include "extensions/renderer/argument_spec.h"
+#include "extensions/renderer/bindings/api_type_reference_map.h"
+#include "extensions/renderer/bindings/argument_spec.h"
 #include "gin/arguments.h"
 #include "gin/converter.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebSelector.h"
 
 namespace extensions {
 
 namespace {
 
 void CallbackHelper(const v8::FunctionCallbackInfo<v8::Value>& info) {
@@ skipping 215 matching lines @@
       try_catch.ReThrow();
       return;
     }
   }
 
   if (!success)
     arguments.ThrowTypeError("Invalid invocation: " + error);
 }
 
 }  // namespace extensions