[Touch Adjustment] Pass primary_pointer_type to WebGestureEvent and disable adjustment for stylus

third_party/WebKit/public/platform/WebGestureEvent.h

Index: third_party/WebKit/public/platform/WebGestureEvent.h
diff --git a/third_party/WebKit/public/platform/WebGestureEvent.h b/third_party/WebKit/public/platform/WebGestureEvent.h
index 4cefc3414fbff56fd901ad0531a5c6027fcf9ee3..470519363506d64ee253020b5905566deeafc098 100644
--- a/third_party/WebKit/public/platform/WebGestureEvent.h
+++ b/third_party/WebKit/public/platform/WebGestureEvent.h
@@ -38,6 +38,9 @@ class WebGestureEvent : public WebInputEvent {
   int global_y;
   WebGestureDevice source_device;
 
+  // The pointer type for the first touch point in the gesture.
+  WebPointerProperties::PointerType primary_pointer_type;

[jochen (gone - plz use gerrit), 2017/06/27 09:29:24]

can you assign a default value here?

[chongz, 2017/06/27 20:13:12]

Done. Added default value for readability, but we shouldn't need it as we have
done |memset()| in |WebInputEvent|.

+
   // If the WebGestureEvent has sourceDevice=WebGestureDeviceTouchscreen, this
   // field contains the unique identifier for the touch event that released
   // this event at TouchDispositionGestureFilter. If the WebGestureEvents was