[mojo] Enable ServiceRegistryImpl to override remote services

content/renderer/mojo/service_registry_js_wrapper.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_RENDERER_MOJO_SERVICE_REGISTRY_JS_WRAPPER_H_
 #define CONTENT_RENDERER_MOJO_SERVICE_REGISTRY_JS_WRAPPER_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "gin/handle.h"
 #include "gin/object_template_builder.h"
 #include "gin/wrappable.h"
-#include "mojo/public/cpp/system/core.h"
+#include "mojo/public/cpp/system/handle.h"
+
+namespace v8 {
+class Isolate;
+}
 
 namespace content {
 
 class ServiceRegistry;
 
 // A JS wrapper around ServiceRegistry that allows connecting to remote
 // services.
 class CONTENT_EXPORT ServiceRegistryJsWrapper
     : public gin::Wrappable<ServiceRegistryJsWrapper> {
  public:
   ~ServiceRegistryJsWrapper() override;
   static gin::Handle<ServiceRegistryJsWrapper> Create(
       v8::Isolate* isolate,
       ServiceRegistry* service_registry);
 
   // gin::Wrappable<ServiceRegistryJsWrapper> overrides.
   gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
       v8::Isolate* isolate) override;
 
   // JS interface implementation.
+  void AddServiceOverride(const std::string& service_name,
+                          v8::Local<v8::Function> service_factory);
   mojo::Handle ConnectToService(const std::string& service_name);
 
   static gin::WrapperInfo kWrapperInfo;
   static const char kModuleName[];
 
  private:
   explicit ServiceRegistryJsWrapper(
       base::WeakPtr<ServiceRegistry> service_registry);
 
   base::WeakPtr<ServiceRegistry> service_registry_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceRegistryJsWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MOJO_SERVICE_REGISTRY_JS_WRAPPER_H_