[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/bindings/api_binding_js_util.cc

 // 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.
 
-#include "extensions/renderer/api_binding_js_util.h"
+#include "extensions/renderer/bindings/api_binding_js_util.h"
 
 #include "base/values.h"
-#include "extensions/renderer/api_event_handler.h"
-#include "extensions/renderer/api_request_handler.h"
-#include "extensions/renderer/api_signature.h"
-#include "extensions/renderer/api_type_reference_map.h"
-#include "extensions/renderer/declarative_event.h"
+#include "extensions/renderer/bindings/api_event_handler.h"
+#include "extensions/renderer/bindings/api_request_handler.h"
+#include "extensions/renderer/bindings/api_signature.h"
+#include "extensions/renderer/bindings/api_type_reference_map.h"
+#include "extensions/renderer/bindings/declarative_event.h"
 #include "gin/converter.h"
 #include "gin/dictionary.h"
 #include "gin/handle.h"
 #include "gin/object_template_builder.h"
 
 namespace extensions {
 
 gin::WrapperInfo APIBindingJSUtil::kWrapperInfo = {gin::kEmbedderNativeGin};
 
 APIBindingJSUtil::APIBindingJSUtil(APITypeReferenceMap* type_refs,
@@ skipping 177 matching lines @@
   v8::Local<v8::Context> context = arguments->GetHolderCreationContext();
 
   request_handler_->last_error()->SetError(context, error);
   run_js_.Run(callback, context, 0, nullptr);
 
   bool report_if_unchecked = true;
   request_handler_->last_error()->ClearError(context, report_if_unchecked);
 }
 
 }  // namespace extensions