Ignore HID elements in extraneous application collections on OSX

content/browser/gamepad/gamepad_platform_data_fetcher_mac.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_PLATFORM_DATA_FETCHER_MAC_H_
 #define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <IOKit/hid/IOHIDManager.h>
 #include <stddef.h>
@@ skipping 42 matching lines @@
   static void ValueChangedCallback(void* context,
                                    IOReturn result,
                                    void* sender,
                                    IOHIDValueRef ref);
 
   size_t GetEmptySlot();
   size_t GetSlotForDevice(IOHIDDeviceRef device);
   size_t GetSlotForXboxDevice(XboxController* device);
 
   void DeviceAdd(IOHIDDeviceRef device);
+  bool CheckCollection(IOHIDElementRef element);
   bool AddButtonsAndAxes(NSArray* elements, size_t slot);
   void DeviceRemove(IOHIDDeviceRef device);
   void ValueChanged(IOHIDValueRef value);
 
   void XboxDeviceAdd(XboxController* device) override;
   void XboxDeviceRemove(XboxController* device) override;
   void XboxValueChanged(XboxController* device,
                         const XboxController::Data& data) override;
 
   void RegisterForNotifications();
@@ skipping 22 matching lines @@
     };
   };
   AssociatedData associated_[blink::WebGamepads::itemsLengthCap];
 
   DISALLOW_COPY_AND_ASSIGN(GamepadPlatformDataFetcherMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_