[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/bindings/api_binding_unittest.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.h"
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
-#include "extensions/renderer/api_binding_hooks.h"
-#include "extensions/renderer/api_binding_hooks_test_delegate.h"
-#include "extensions/renderer/api_binding_test.h"
-#include "extensions/renderer/api_binding_test_util.h"
-#include "extensions/renderer/api_event_handler.h"
-#include "extensions/renderer/api_invocation_errors.h"
-#include "extensions/renderer/api_request_handler.h"
-#include "extensions/renderer/api_type_reference_map.h"
+#include "extensions/renderer/bindings/api_binding.h"
+#include "extensions/renderer/bindings/api_binding_hooks.h"
+#include "extensions/renderer/bindings/api_binding_hooks_test_delegate.h"
+#include "extensions/renderer/bindings/api_binding_test.h"
+#include "extensions/renderer/bindings/api_binding_test_util.h"
+#include "extensions/renderer/bindings/api_event_handler.h"
+#include "extensions/renderer/bindings/api_invocation_errors.h"
+#include "extensions/renderer/bindings/api_request_handler.h"
+#include "extensions/renderer/bindings/api_type_reference_map.h"
 #include "gin/arguments.h"
 #include "gin/converter.h"
 #include "gin/public/context_holder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/web/WebScopedUserGesture.h"
 #include "v8/include/v8.h"
 
 namespace extensions {
 
 using namespace api_errors;
@@ skipping 1239 matching lines @@
 
   // The extra property should be present on the binding object.
   EXPECT_EQ("42", GetStringPropertyFromObject(binding_object, context,
                                               "hookedProperty"));
   // Sanity check: other values should still be there.
   EXPECT_EQ("function",
             GetStringPropertyFromObject(binding_object, context, "oneString"));
 }
 
 }  // namespace extensions