Revert of Move content's shell connections to the IO thread

chrome/browser/chromeos/chrome_interface_factory.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/chromeos/chrome_interface_factory.h"
 
-#include <memory>
-
-#include "ash/sysui/public/interfaces/wallpaper.mojom.h"
-#include "base/lazy_instance.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/ash/app_list/app_list_presenter_service.h"
 #include "chrome/browser/ui/ash/chrome_wallpaper_manager.h"
 #include "chrome/browser/ui/ash/keyboard_ui_service.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
-#include "content/public/common/mojo_shell_connection.h"
-#include "mash/public/interfaces/launchable.mojom.h"
-#include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/shell/public/cpp/connection.h"
-#include "ui/app_list/presenter/app_list_presenter.mojom.h"
-#include "ui/keyboard/keyboard.mojom.h"
-
-namespace chromeos {
-
-namespace {
 
 class ChromeLaunchable : public mash::mojom::Launchable {
  public:
   ChromeLaunchable() {}
   ~ChromeLaunchable() override {}
 
   void ProcessRequest(mash::mojom::LaunchableRequest request) {
     bindings_.AddBinding(this, std::move(request));
   }
 
@@ skipping 25 matching lines @@
       default:
         NOTREACHED();
     }
   }
 
   mojo::BindingSet<mash::mojom::Launchable> bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLaunchable);
 };
 
-class FactoryImpl {
- public:
-  FactoryImpl() {}
-  ~FactoryImpl() {}
+namespace chromeos {
 
-  template <typename Interface>
-  static void AddFactory(
-      shell::Connection* connection,
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
-    connection->AddInterface<Interface>(
-        base::Bind(&FactoryImpl::CallMainThreadFactory<Interface>),
-        task_runner);
-  }
-
- private:
-  static FactoryImpl* Get() {
-    if (!factory_.Get())
-      factory_.Get().reset(new FactoryImpl);
-    return factory_.Get().get();
-  }
-
-  template <typename Interface>
-  static void CallMainThreadFactory(mojo::InterfaceRequest<Interface> request) {
-    Get()->BindRequest(std::move(request));
-  }
-
-  void BindRequest(keyboard::mojom::KeyboardRequest request) {
-    if (!keyboard_ui_service_)
-      keyboard_ui_service_.reset(new KeyboardUIService);
-    keyboard_bindings_.AddBinding(keyboard_ui_service_.get(),
-                                  std::move(request));
-  }
-
-  void BindRequest(mash::mojom::LaunchableRequest request) {
-    if (!launchable_)
-      launchable_.reset(new ChromeLaunchable);
-    launchable_->ProcessRequest(std::move(request));
-  }
-
-  void BindRequest(ash::sysui::mojom::WallpaperManagerRequest request) {
-    if (!wallpaper_manager_)
-      wallpaper_manager_.reset(new ChromeWallpaperManager);
-    wallpaper_manager_->ProcessRequest(std::move(request));
-  }
-
-  void BindRequest(app_list::mojom::AppListPresenterRequest request) {
-    if (!app_list_presenter_service_)
-      app_list_presenter_service_.reset(new AppListPresenterService);
-    app_list_presenter_bindings_.AddBinding(app_list_presenter_service_.get(),
-                                            std::move(request));
-  }
-
-  static base::LazyInstance<std::unique_ptr<FactoryImpl>>::Leaky factory_;
-
-  std::unique_ptr<KeyboardUIService> keyboard_ui_service_;
-  mojo::BindingSet<keyboard::mojom::Keyboard> keyboard_bindings_;
-  std::unique_ptr<ChromeLaunchable> launchable_;
-  std::unique_ptr<ChromeWallpaperManager> wallpaper_manager_;
-  std::unique_ptr<AppListPresenterService> app_list_presenter_service_;
-  mojo::BindingSet<app_list::mojom::AppListPresenter>
-      app_list_presenter_bindings_;
-
-  DISALLOW_COPY_AND_ASSIGN(FactoryImpl);
-};
-
-base::LazyInstance<std::unique_ptr<FactoryImpl>>::Leaky FactoryImpl::factory_ =
-    LAZY_INSTANCE_INITIALIZER;
-
-}  // namespace
-
-ChromeInterfaceFactory::ChromeInterfaceFactory()
-    : main_thread_task_runner_(base::ThreadTaskRunnerHandle::Get()) {}
-
+ChromeInterfaceFactory::ChromeInterfaceFactory() {}
 ChromeInterfaceFactory::~ChromeInterfaceFactory() {}
 
-bool ChromeInterfaceFactory::OnConnect(shell::Connection* connection,
-                                       shell::Connector* connector) {
-  FactoryImpl::AddFactory<keyboard::mojom::Keyboard>(
-      connection, main_thread_task_runner_);
-  FactoryImpl::AddFactory<mash::mojom::Launchable>(
-      connection, main_thread_task_runner_);
-  FactoryImpl::AddFactory<ash::sysui::mojom::WallpaperManager>(
-      connection, main_thread_task_runner_);
-  FactoryImpl::AddFactory<app_list::mojom::AppListPresenter>(
-      connection, main_thread_task_runner_);
+bool ChromeInterfaceFactory::OnConnect(shell::Connection* connection) {
+  connection->AddInterface<keyboard::mojom::Keyboard>(this);
+  connection->AddInterface<mash::mojom::Launchable>(this);
+  connection->AddInterface<ash::sysui::mojom::WallpaperManager>(this);
+  connection->AddInterface<app_list::mojom::AppListPresenter>(this);
   return true;
 }
 
+void ChromeInterfaceFactory::Create(
+    shell::Connection* connection,
+    mojo::InterfaceRequest<keyboard::mojom::Keyboard> request) {
+  if (!keyboard_ui_service_)
+    keyboard_ui_service_.reset(new KeyboardUIService);
+  keyboard_bindings_.AddBinding(keyboard_ui_service_.get(), std::move(request));
+}
+
+void ChromeInterfaceFactory::Create(shell::Connection* connection,
+                                    mash::mojom::LaunchableRequest request) {
+  if (!launchable_)
+    launchable_.reset(new ChromeLaunchable);
+  launchable_->ProcessRequest(std::move(request));
+}
+
+void ChromeInterfaceFactory::Create(
+    shell::Connection* connection,
+    ash::sysui::mojom::WallpaperManagerRequest request) {
+  if (!wallpaper_manager_)
+    wallpaper_manager_.reset(new ChromeWallpaperManager);
+  wallpaper_manager_->ProcessRequest(std::move(request));
+}
+
+void ChromeInterfaceFactory::Create(
+    shell::Connection* connection,
+    mojo::InterfaceRequest<app_list::mojom::AppListPresenter> request) {
+  if (!app_list_presenter_service_)
+    app_list_presenter_service_.reset(new AppListPresenterService);
+  app_list_presenter_bindings_.AddBinding(app_list_presenter_service_.get(),
+                                          std::move(request));
+}
+
 }  // namespace chromeos