Begin to wean child processes off reliance on a persistent service_manager::Connection to the brows…

content/renderer/mojo/interface_provider_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_INTERFACE_PROVIDER_JS_WRAPPER_H_
 #define CONTENT_RENDERER_MOJO_INTERFACE_PROVIDER_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/message_pipe.h"
 #include "v8/include/v8.h"
 
 namespace service_manager {
+class Connector;
 class InterfaceProvider;
 }
 
 namespace content {
 
-// A JS wrapper around service_manager::InterfaceProvider that allows connecting
-// to
-// remote services.
+// A JS wrapper around service_manager::Connector/InterfaceProvider that allows
+// script to bind interfaces exposed by the browser.
 class CONTENT_EXPORT InterfaceProviderJsWrapper
     : public gin::Wrappable<InterfaceProviderJsWrapper> {
  public:
   ~InterfaceProviderJsWrapper() override;
   static gin::Handle<InterfaceProviderJsWrapper> Create(
       v8::Isolate* isolate,
       v8::Handle<v8::Context> context,
+      service_manager::Connector* connector);
+  static gin::Handle<InterfaceProviderJsWrapper> Create(
+      v8::Isolate* isolate,
+      v8::Handle<v8::Context> context,
       service_manager::InterfaceProvider* remote_interfaces);
 
   // gin::Wrappable<InterfaceProviderJsWrapper> overrides.
   gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
       v8::Isolate* isolate) override;
 
   // JS interface implementation.
   void AddOverrideForTesting(const std::string& interface_name,
                              v8::Local<v8::Function> interface_factory);
   void ClearOverridesForTesting();
   mojo::Handle GetInterface(const std::string& interface_name);
 
   static gin::WrapperInfo kWrapperInfo;
   static const char kPerFrameModuleName[];
   static const char kPerProcessModuleName[];
 
  private:
   using ScopedJsFactory =
       v8::Persistent<v8::Function, v8::CopyablePersistentTraits<v8::Function>>;
+  using BindCallback = base::Callback<void(mojo::ScopedMessagePipeHandle)>;
 
   InterfaceProviderJsWrapper(
       v8::Isolate* isolate,
       v8::Handle<v8::Context> context,
+      base::WeakPtr<service_manager::Connector> connector);
+  InterfaceProviderJsWrapper(
+      v8::Isolate* isolate,
+      v8::Handle<v8::Context> context,
       base::WeakPtr<service_manager::InterfaceProvider> remote_interfaces);
 
   void CallJsFactory(const ScopedJsFactory& factory,
                      mojo::ScopedMessagePipeHandle pipe);
 
   static void ClearContext(
       const v8::WeakCallbackInfo<InterfaceProviderJsWrapper>& data);
 
   v8::Isolate* isolate_;
   v8::Global<v8::Context> context_;
+  // Either one of the following two fields will be non-null.
+  base::WeakPtr<service_manager::Connector> connector_;
   base::WeakPtr<service_manager::InterfaceProvider> remote_interfaces_;
 
   base::WeakPtrFactory<InterfaceProviderJsWrapper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InterfaceProviderJsWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MOJO_INTERFACE_PROVIDER_JS_WRAPPER_H_