Added primary input devices setting to blink to allow media queries for hover/pointer

Source/WebCore/page/Settings.h

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 39 matching lines @@
         EditableLinkLiveWhenNotFocused,
         EditableLinkNeverLive
     };
 
     enum TextDirectionSubmenuInclusionBehavior {
         TextDirectionSubmenuNeverIncluded,
         TextDirectionSubmenuAutomaticallyIncluded,
         TextDirectionSubmenuAlwaysIncluded
     };
 
+    // Enum  bit flags for primary pointer device to tell Blink what kind of
+    // input the user is primarily using. Note that it's not an exhaustive
+    // list of what is available on the user's system.
+    // e.g. Primary pointer may be set to PointerDeviceMouse even though the
+    // device has a mouse and a touch screen.
+    enum PointerDevice {
+        PointerDeviceUnknown = 0,
+        PointerDeviceMouse = 1,
+        PointerDeviceTouch = 2,
+        PointerDeviceNone = 4
+    };
+
     // UScriptCode uses -1 and 0 for UScriptInvalidCode and UScriptCommon.
     // We need to use -2 and -3 for empty value and deleted value.
     struct UScriptCodeHashTraits : WTF::GenericHashTraits<int> {
         static const bool emptyValueIsZero = false;
         static int emptyValue() { return -2; }
         static void constructDeletedValue(int& slot) { slot = -3; }
         static bool isDeletedValue(int value) { return value == -3; }
     };
 
     typedef HashMap<int, AtomicString, DefaultHash<int>::Hash, UScriptCodeHashTraits> ScriptFontFamilyMap;
@@ skipping 221 matching lines @@
 #if USE(SAFARI_THEME)
         static bool gShouldPaintNativeControls;
 #endif
 
         static double gHiddenPageDOMTimerAlignmentInterval;
     };
 
 } // namespace WebCore
 
 #endif // Settings_h