[Extensions Bindings] Add a bridge to use current custom bindings

extensions/renderer/api_binding.cc

Index: extensions/renderer/api_binding.cc
diff --git a/extensions/renderer/api_binding.cc b/extensions/renderer/api_binding.cc
index 9b6b6091a35221300514713e9bad47a69d22f43d..1cc3244d54295c8b640c69a498f867ed13243a95 100644
--- a/extensions/renderer/api_binding.cc
+++ b/extensions/renderer/api_binding.cc
@@ -296,6 +296,11 @@ v8::Local<v8::Object> APIBinding::CreateInstance(
   return object;
 }
 
+v8::Local<v8::Object> APIBinding::GetJSHookInterface(
+    v8::Local<v8::Context> context) {
+  return binding_hooks_->GetJSHookInterface(api_name_, context);
+}
+
 void APIBinding::HandleCall(const std::string& name,
                             const binding::APISignature* signature,
                             gin::Arguments* arguments) {