Fix stylus tools palette.

ui/events/devices/touchscreen_device.cc

Index: ui/events/devices/touchscreen_device.cc
diff --git a/ui/events/devices/touchscreen_device.cc b/ui/events/devices/touchscreen_device.cc
index 4a2cf5bee8a495d33043f411a0d592ddef00dbf1..b840b9681d128c7ac7b96e359df8b1d36d05c813 100644
--- a/ui/events/devices/touchscreen_device.cc
+++ b/ui/events/devices/touchscreen_device.cc
@@ -10,8 +10,7 @@
 
 namespace ui {
 
-TouchscreenDevice::TouchscreenDevice() : touch_points(0) {
-}
+TouchscreenDevice::TouchscreenDevice() : touch_points(0), is_stylus(false) {}
 
 TouchscreenDevice::TouchscreenDevice(int id,
                                      InputDeviceType type,
@@ -33,4 +32,6 @@ TouchscreenDevice::TouchscreenDevice(const InputDevice& input_device,
       is_stylus(false) {
 }
 
+TouchscreenDevice::~TouchscreenDevice() {}
+
 }  // namespace ui