Corrected logic in IsTouchDevicePresent to ignore pen devices.

ui/base/touch/touch_device_win.cc

Index: ui/base/touch/touch_device_win.cc
diff --git a/ui/base/touch/touch_device_win.cc b/ui/base/touch/touch_device_win.cc
index 0a0025143abf132f06468aeda2d104c849b1e4cf..f1f4f6ea78067e4319ea997ff7d22912ffdb8830 100644
--- a/ui/base/touch/touch_device_win.cc
+++ b/ui/base/touch/touch_device_win.cc
@@ -9,9 +9,9 @@
 namespace ui {
 
 bool IsTouchDevicePresent() {
-  // Docs: http://msdn.microsoft.com/en-us/library/dd371581(VS.85).aspx
-  return (::base::win::GetVersion() >= ::base::win::VERSION_WIN7) &&
-      (::GetSystemMetrics(SM_DIGITIZER) > 0);
+  int value = GetSystemMetrics(SM_DIGITIZER);
+  return (value & (NID_READY | NID_INTEGRATED_TOUCH)) ==
+             (NID_READY | NID_INTEGRATED_TOUCH);
 }
 
 }  // namespace ui