ui: Cleanup class/struct forward declarations

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 86ae7ab7ece4c7795acfd8c8f86f5da48fd29185..6fb7388a38cbd05892b93e20bdc7ac2f52723a2e 100644
--- a/extensions/renderer/api_bindings_system.cc
+++ b/extensions/renderer/api_bindings_system.cc
@@ -13,11 +13,11 @@ namespace extensions {
 APIBindingsSystem::Request::Request() {}
 APIBindingsSystem::Request::~Request() {}
 
-APIBindingsSystem::APIBindingsSystem(
-    const APIRequestHandler::CallJSFunction& call_js,
-    const GetAPISchemaMethod& get_api_schema,
-    const SendRequestMethod& send_request)
+APIBindingsSystem::APIBindingsSystem(const binding::RunJSFunction& call_js,
+                                     const GetAPISchemaMethod& get_api_schema,
+                                     const SendRequestMethod& send_request)
     : request_handler_(call_js),
+      event_handler_(call_js),
       get_api_schema_(get_api_schema),
       send_request_(send_request) {}
 
@@ -31,7 +31,8 @@ v8::Local<v8::Object> APIBindingsSystem::CreateAPIInstance(
   std::unique_ptr<APIBinding>& binding = api_bindings_[api_name];
   if (!binding)
     binding = CreateNewAPIBinding(api_name);
-  return binding->CreateInstance(context, isolate, is_available);
+  return binding->CreateInstance(
+      context, isolate, &event_handler_, is_available);
 }
 
 std::unique_ptr<APIBinding> APIBindingsSystem::CreateNewAPIBinding(
@@ -43,9 +44,11 @@ std::unique_ptr<APIBinding> APIBindingsSystem::CreateNewAPIBinding(
   const base::ListValue* type_definitions = nullptr;
   // Type definitions might not exist for the given API.
   api_schema.GetList("types", &type_definitions);
+  const base::ListValue* event_definitions = nullptr;
+  api_schema.GetList("events", &event_definitions);
 
   return base::MakeUnique<APIBinding>(
-      api_name, *function_definitions, type_definitions,
+      api_name, *function_definitions, type_definitions, event_definitions,
       base::Bind(&APIBindingsSystem::OnAPICall, base::Unretained(this)),
       &type_reference_map_);
 }
@@ -55,6 +58,12 @@ void APIBindingsSystem::CompleteRequest(const std::string& request_id,
   request_handler_.CompleteRequest(request_id, response);
 }
 
+void APIBindingsSystem::FireEventInContext(const std::string& event_name,
+                                           v8::Local<v8::Context> context,
+                                           const base::ListValue& response) {
+  event_handler_.FireEventInContext(event_name, context, response);
+}
+
 void APIBindingsSystem::OnAPICall(const std::string& name,
                                   std::unique_ptr<base::ListValue> arguments,
                                   v8::Isolate* isolate,