Fix stylus tools palette.

ui/events/devices/input_device.cc

Index: ui/events/devices/input_device.cc
diff --git a/ui/events/devices/input_device.cc b/ui/events/devices/input_device.cc
index 4734edd0280986dc11f231b3a65394e6db004d4b..b60f85a0a15afc0a662174820090ccebb6bf46a0 100644
--- a/ui/events/devices/input_device.cc
+++ b/ui/events/devices/input_device.cc
@@ -12,8 +12,10 @@ namespace ui {
 const int InputDevice::kInvalidId = 0;
 
 InputDevice::InputDevice()
-    : id(kInvalidId), type(InputDeviceType::INPUT_DEVICE_UNKNOWN) {
-}
+    : id(kInvalidId),
+      type(InputDeviceType::INPUT_DEVICE_UNKNOWN),
+      vendor_id(0),
+      product_id(0) {}
 
 InputDevice::InputDevice(int id, InputDeviceType type, const std::string& name)
     : id(id), type(type), name(name), vendor_id(0), product_id(0) {