[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/bindings/declarative_event_unittest.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_event.h"
+#include "extensions/renderer/bindings/declarative_event.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "extensions/common/extension_api.h"
-#include "extensions/renderer/api_binding_test.h"
-#include "extensions/renderer/api_binding_test_util.h"
-#include "extensions/renderer/api_bindings_system.h"
-#include "extensions/renderer/api_bindings_system_unittest.h"
-#include "extensions/renderer/api_last_error.h"
-#include "extensions/renderer/api_request_handler.h"
-#include "extensions/renderer/api_type_reference_map.h"
-#include "extensions/renderer/argument_spec.h"
+#include "extensions/renderer/bindings/api_binding_test.h"
+#include "extensions/renderer/bindings/api_binding_test_util.h"
+#include "extensions/renderer/bindings/api_bindings_system.h"
+#include "extensions/renderer/bindings/api_bindings_system_unittest.h"
+#include "extensions/renderer/bindings/api_last_error.h"
+#include "extensions/renderer/bindings/api_request_handler.h"
+#include "extensions/renderer/bindings/api_type_reference_map.h"
+#include "extensions/renderer/bindings/argument_spec.h"
 #include "gin/handle.h"
 
 namespace extensions {
 
 namespace {
 
 const char kDeclarativeAPIName[] = "alpha";
 const char kDeclarativeAPISpec[] =
     "{"
     "  'types': [{"
@@ skipping 217 matching lines @@
         "})";
     v8::Local<v8::Function> remove_rules =
         FunctionFromString(context, kGetRules);
     RunFunctionOnGlobal(remove_rules, context, arraysize(args), args);
     ValidateLastRequest("events.getRules", "['alpha.declarativeEvent',0,null]");
     reset_last_request();
   }
 }
 
 }  // namespace extensions