Pointer/hover media query support: platform-dependent changes

ui/base/touch/touch_device.cc

 // Copyright (c) 2013 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.
 
 #include "ui/base/touch/touch_device.h"
 
 namespace ui {
 
 // Platforms supporting touch link in an alternate implementation of this
 // method.
 bool IsTouchDevicePresent() {
   return false;
 }
 
 int MaxTouchPoints() {
   return 0;
 }
 
+int AvailablePointerTypes() {
+  // TODO(mustaq): Replace the stub below
+  return POINTER_TYPE_NONE;
+}
+
+PointerType PrimaryPointerType() {
+  // TODO(mustaq): Replace the stub below
+  return POINTER_TYPE_NONE;
+}
+
+int AvailableHoverTypes() {
+  // TODO(mustaq): Replace the stub below
+  return HOVER_TYPE_NONE;
+}
+
+HoverType PrimaryHoverType() {
+  // TODO(mustaq): Replace the stub below
+  return HOVER_TYPE_NONE;
+}
+
 }  // namespace ui