Revert of Refactoring gamepad polling to support dynamically added sources

content/browser/gamepad/gamepad_platform_data_fetcher_linux.h

Index: content/browser/gamepad/gamepad_platform_data_fetcher_linux.h
diff --git a/content/browser/gamepad/gamepad_platform_data_fetcher_linux.h b/content/browser/gamepad/gamepad_platform_data_fetcher_linux.h
index 683cf1dfad3b327b26a1e42404ad703b32147688..b98646a4e7fa01e08e5b204a227ac40f894957fe 100644
--- a/content/browser/gamepad/gamepad_platform_data_fetcher_linux.h
+++ b/content/browser/gamepad/gamepad_platform_data_fetcher_linux.h
@@ -5,6 +5,11 @@
 #ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_LINUX_H_
 #define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_LINUX_H_
 
+#include <stddef.h>
+
+#include <string>
+
+#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/gamepad/gamepad_data_fetcher.h"
@@ -23,11 +28,10 @@
   ~GamepadPlatformDataFetcherLinux() override;
 
   // GamepadDataFetcher implementation.
-  void GetGamepadData(bool devices_changed_hint) override;
+  void GetGamepadData(blink::WebGamepads* pads,
+                      bool devices_changed_hint) override;
 
  private:
-  void OnAddedToProvider() override;
-
   void RefreshDevice(udev_device* dev);
   void EnumerateDevices();
   void ReadDeviceData(size_t index);