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

device/gamepad/gamepad_provider.h

Index: device/gamepad/gamepad_provider.h
diff --git a/device/gamepad/gamepad_provider.h b/device/gamepad/gamepad_provider.h
index faed53d5bc883a9c51f987f244f44e516b0ec794..d7cccffa572a01eb880a11885c1c4b813c5a87b9 100644
--- a/device/gamepad/gamepad_provider.h
+++ b/device/gamepad/gamepad_provider.h
@@ -42,12 +42,10 @@ class DEVICE_GAMEPAD_EXPORT GamepadProvider
       public base::SystemMonitor::DevicesChangedObserver {
  public:
   explicit GamepadProvider(
-      std::unique_ptr<GamepadSharedBuffer> buffer,
       GamepadConnectionChangeClient* connection_change_client);
 
   // Manually specifies the data fetcher. Used for testing.
   explicit GamepadProvider(
-      std::unique_ptr<GamepadSharedBuffer> buffer,
       GamepadConnectionChangeClient* connection_change_client,
       std::unique_ptr<GamepadDataFetcher> fetcher);
 
@@ -153,6 +151,7 @@ class DEVICE_GAMEPAD_EXPORT GamepadProvider
 
   base::Lock shared_memory_lock_;
   std::unique_ptr<GamepadSharedBuffer> gamepad_shared_buffer_;
+  base::SharedMemory* gamepad_shared_memory;
 
   // Polling is done on this background thread.
   std::unique_ptr<base::Thread> polling_thread_;