Pointer/hover media query support: platform-independent changes

ui/base/touch/touch_device.h

Index: ui/base/touch/touch_device.h
diff --git a/ui/base/touch/touch_device.h b/ui/base/touch/touch_device.h
index fd75ebcc9c6714e66ae918ab7a276e299d6b9bb9..971cfea82aa407f5a8af615bf9e9e3812f97ac8b 100644
--- a/ui/base/touch/touch_device.h
+++ b/ui/base/touch/touch_device.h
@@ -26,6 +26,28 @@ UI_BASE_EXPORT bool IsTouchDevicePresent();
 // http://www.w3.org/TR/pointerevents/#widl-Navigator-maxTouchPoints
 UI_BASE_EXPORT int MaxTouchPoints();
 
+// Bit field values indicating what kind of pointer types are available. These
+// enums must match blink::WebSettings::PointerType enums, which is compile-time
+// asserted in content/public/common/web_preferences.cc .
+enum PointerType {
+  POINTER_TYPE_NONE = 1 << 0,
+  POINTER_TYPE_FIRST = POINTER_TYPE_NONE,
+  POINTER_TYPE_COARSE = 1 << 1,
+  POINTER_TYPE_FINE = 1 << 2,
+  POINTER_TYPE_LAST = POINTER_TYPE_FINE
+};
+
+// Bit field values indicating what kind of hover types are available. These
+// enums must match blink::WebSettings::HoverType enums, which is compile-time
+// asserted in content/public/common/web_preferences.cc .
+enum HoverType {
+  HOVER_TYPE_NONE = 1 << 0,
+  HOVER_TYPE_FIRST = HOVER_TYPE_NONE,
+  HOVER_TYPE_ON_DEMAND = 1 << 1,
+  HOVER_TYPE_HOVER = 1 << 2,
+  HOVER_TYPE_LAST = HOVER_TYPE_HOVER
+};

[sadrul, 2014/11/11 18:40:50]

I was going to suggest using the WebSettings::PointerType enums in
WebPreferences, since these new enums aren't used anywhere in UI code. But looks
like there will be follow-up patches that uses these on all platforms? In that
case, LGTM

+
 #if defined(OS_ANDROID)
 bool RegisterTouchDeviceAndroid(JNIEnv* env);
 #endif