[Extensions Bindings] Move request dispatch to APIRequestHandler

extensions/renderer/api_bindings_system.cc

Index: extensions/renderer/api_bindings_system.cc
diff --git a/extensions/renderer/api_bindings_system.cc b/extensions/renderer/api_bindings_system.cc
index 76490c01c919c07b274a8ed9b2c33a21684626bc..b90483bcb1ae33ed74a0142f002f31784b217c19 100644
--- a/extensions/renderer/api_bindings_system.cc
+++ b/extensions/renderer/api_bindings_system.cc
@@ -15,17 +15,16 @@ APIBindingsSystem::APIBindingsSystem(
     const binding::RunJSFunction& call_js,
     const binding::RunJSFunctionSync& call_js_sync,
     const GetAPISchemaMethod& get_api_schema,
-    const APIBinding::SendRequestMethod& send_request,
+    const APIRequestHandler::SendRequestMethod& send_request,
     const APIEventHandler::EventListenersChangedMethod& event_listeners_changed,
     APILastError last_error)
     : type_reference_map_(base::Bind(&APIBindingsSystem::InitializeType,
                                      base::Unretained(this))),
-      request_handler_(call_js, std::move(last_error)),
+      request_handler_(send_request, call_js, std::move(last_error)),
       event_handler_(call_js, event_listeners_changed),
       call_js_(call_js),
       call_js_sync_(call_js_sync),
-      get_api_schema_(get_api_schema),
-      send_request_(send_request) {}
+      get_api_schema_(get_api_schema) {}
 
 APIBindingsSystem::~APIBindingsSystem() {}
 
@@ -71,8 +70,8 @@ std::unique_ptr<APIBinding> APIBindingsSystem::CreateNewAPIBinding(
 
   return base::MakeUnique<APIBinding>(
       api_name, function_definitions, type_definitions, event_definitions,
-      property_definitions, send_request_, std::move(hooks),
-      &type_reference_map_, &request_handler_, &event_handler_);
+      property_definitions, std::move(hooks), &type_reference_map_,
+      &request_handler_, &event_handler_);
 }
 
 void APIBindingsSystem::InitializeType(const std::string& type_name) {