[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/bindings/api_binding_hooks.cc

Index: extensions/renderer/bindings/api_binding_hooks.cc
diff --git a/extensions/renderer/api_binding_hooks.cc b/extensions/renderer/bindings/api_binding_hooks.cc
similarity index 98%
rename from extensions/renderer/api_binding_hooks.cc
rename to extensions/renderer/bindings/api_binding_hooks.cc
index 03d14190cc13b17a9e3df90d5d0f9aadb4089251..cd61147dd94127e536ef3c45d5273ffc57f52d57 100644
--- a/extensions/renderer/api_binding_hooks.cc
+++ b/extensions/renderer/bindings/api_binding_hooks.cc
@@ -2,13 +2,13 @@
 // 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_hooks.h"
+#include "extensions/renderer/bindings/api_binding_hooks.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/supports_user_data.h"
-#include "extensions/renderer/api_binding_hooks_delegate.h"
-#include "extensions/renderer/api_signature.h"
+#include "extensions/renderer/bindings/api_binding_hooks_delegate.h"
+#include "extensions/renderer/bindings/api_signature.h"
 #include "gin/arguments.h"
 #include "gin/handle.h"
 #include "gin/object_template_builder.h"