Refactoring gamepad polling to support dynamically added sources

content/browser/gamepad/gamepad_platform_data_fetcher_win.h

Index: content/browser/gamepad/gamepad_platform_data_fetcher_win.h
diff --git a/content/browser/gamepad/gamepad_platform_data_fetcher_win.h b/content/browser/gamepad/gamepad_platform_data_fetcher_win.h
index f1efab3440bd6098d36d8b4710e24a19c591ba24..813a62dd884015b4738e6db1710073a1c4da5106 100644
--- a/content/browser/gamepad/gamepad_platform_data_fetcher_win.h
+++ b/content/browser/gamepad/gamepad_platform_data_fetcher_win.h
@@ -24,7 +24,6 @@
 #include "base/scoped_native_library.h"
 #include "content/browser/gamepad/gamepad_data_fetcher.h"
 #include "content/browser/gamepad/gamepad_standard_mappings.h"
-#include "content/browser/gamepad/raw_input_data_fetcher_win.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 
 namespace content {
@@ -33,14 +32,10 @@ class GamepadPlatformDataFetcherWin : public GamepadDataFetcher {
  public:
   GamepadPlatformDataFetcherWin();
   ~GamepadPlatformDataFetcherWin() override;
-  void GetGamepadData(blink::WebGamepads* pads,
-                      bool devices_changed_hint) override;
-  void PauseHint(bool paused) override;
+  void GetGamepadData(bool devices_changed_hint) override;
 
  private:
-  // XInput-specific implementation for GetGamepadData.
-  bool GetXInputGamepadData(blink::WebGamepads* pads,
-                            bool devices_changed_hint);
+  void OnAddedToProvider() override;
 
   // The three function types we use from xinput1_3.dll.
   typedef void (WINAPI *XInputEnableFunc)(BOOL enable);
@@ -57,14 +52,7 @@ class GamepadPlatformDataFetcherWin : public GamepadDataFetcher {
 
   // Scan for connected XInput and DirectInput gamepads.
   void EnumerateDevices();
-  bool GetXInputPadConnectivity(int i, blink::WebGamepad* pad) const;
-
-  void GetXInputPadData(int i, blink::WebGamepad* pad);
-  void GetRawInputPadData(int i, blink::WebGamepad* pad);
-
-  int FirstAvailableGamepadId() const;
-  bool HasXInputGamepad(int index) const;
-  bool HasRawInputGamepad(const HANDLE handle) const;
+  void GetXInputPadData(int i);
 
   base::ScopedNativeLibrary xinput_dll_;
   bool xinput_available_;
@@ -75,21 +63,7 @@ class GamepadPlatformDataFetcherWin : public GamepadDataFetcher {
   XInputGetCapabilitiesFunc xinput_get_capabilities_;
   XInputGetStateFunc xinput_get_state_;
 
-  enum PadConnectionStatus {
-    DISCONNECTED,
-    XINPUT_CONNECTED,
-    RAWINPUT_CONNECTED
-  };
-
-  struct PlatformPadState {
-    PadConnectionStatus status;
-
-    int xinput_index; // XInput-only
-    HANDLE raw_input_handle;  // RawInput-only fields.
-  };
-  PlatformPadState platform_pad_state_[blink::WebGamepads::itemsLengthCap];
-
-  scoped_ptr<RawInputDataFetcher> raw_input_fetcher_;
+  bool xinput_connected_[XUSER_MAX_COUNT];
 
   DISALLOW_COPY_AND_ASSIGN(GamepadPlatformDataFetcherWin);
 };