Movw GamepadService out of content/browser/ and into device/

device/gamepad/gamepad_service.h

 // Copyright (c) 2012 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_BROWSER_GAMEPAD_GAMEPAD_SERVICE_H_
-#define CONTENT_BROWSER_GAMEPAD_GAMEPAD_SERVICE_H_
+#ifndef DEVICE_GAMEPAD_GAMEPAD_SERVICE_H_
+#define DEVICE_GAMEPAD_GAMEPAD_SERVICE_H_
 
 #include <memory>
 #include <set>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/singleton.h"
-#include "base/threading/thread_checker.h"
-#include "content/common/content_export.h"
+
+#include "device/gamepad/gamepad_export.h"
 #include "device/gamepad/gamepad_provider.h"
 
+namespace {
+class SingleThreadTaskRunner;
+}
+
 namespace blink {
 class WebGamepad;
 }
 
+namespace content {
+class GamepadServiceTestConstructor;
+class RenderProcessHost;
+}
+
 namespace device {
 class GamepadConsumer;
 class GamepadDataFetcher;
 class GamepadProvider;
-}
-
-namespace content {
-
-class GamepadServiceTestConstructor;
-class RenderProcessHost;
 
 // Owns the GamepadProvider (the background polling thread) and keeps track of
 // the number of consumers currently using the data (and pausing the provider
 // when not in use).
-class CONTENT_EXPORT GamepadService
+class DEVICE_GAMEPAD_EXPORT GamepadService
     : public device::GamepadConnectionChangeClient {
  public:
   // Returns the GamepadService singleton.
   static GamepadService* GetInstance();
 
   // Increments the number of users of the provider. The Provider is running
   // when there's > 0 users, and is paused when the count drops to 0.
   // consumer is registered to listen for gamepad connections. If this is the
   // first time it is added to the set of consumers it will be treated
   // specially: it will not be informed about connections before a new user
@@ skipping 38 matching lines @@
 
  private:
   friend struct base::DefaultSingletonTraits<GamepadService>;
   friend class GamepadServiceTestConstructor;
   friend class GamepadServiceTest;
 
   GamepadService();
 
   // Constructor for testing. This specifies the data fetcher to use for a
   // provider, bypassing the default platform one.
-  GamepadService(
-      std::unique_ptr<device::GamepadDataFetcher> fetcher);
+  GamepadService(std::unique_ptr<device::GamepadDataFetcher> fetcher);
 
   virtual ~GamepadService();
 
   static void SetInstance(GamepadService*);
 
   void OnUserGesture();
 
   void OnGamepadConnectionChange(bool connected,
                                  int index,
                                  const blink::WebGamepad& pad) override;
 
   void SetSanitizationEnabled(bool sanitize);
 
   struct ConsumerInfo {
     ConsumerInfo(device::GamepadConsumer* consumer)
         : consumer(consumer), did_observe_user_gesture(false) {}
 
     bool operator<(const ConsumerInfo& other) const {
       return consumer < other.consumer;
     }
 
     device::GamepadConsumer* consumer;
     mutable bool is_active;
     mutable bool did_observe_user_gesture;
   };
 
   std::unique_ptr<device::GamepadProvider> provider_;
 
-  base::ThreadChecker thread_checker_;
+  scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
 
   typedef std::set<ConsumerInfo> ConsumerSet;
   ConsumerSet consumers_;
 
   int num_active_consumers_;
 
   bool gesture_callback_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(GamepadService);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_SERVICE_H_
+#endif  // DEVICE_GAMEPAD_GAMEPAD_SERVICE_H_