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

content/shell/test_runner/event_sender.cc

 // Copyright 2014 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 "content/shell/test_runner/event_sender.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 2507 matching lines @@
           }
           event.data.two_finger_tap.first_finger_height = first_finger_height;
         }
       }
       break;
     default:
       NOTREACHED();
   }
 
   event.unique_touch_event_id = GetUniqueTouchEventId(args);
+  // This check is necessary as tests may pass some redundant args.
+  if (!args->PeekNext().IsEmpty() && args->PeekNext()->IsString()) {

[dtapuska, 2017/06/16 15:46:23]

Do you really need the IsString() ? 

If there are layout tests passing params that they should those should be fixed.

[chongz, 2017/06/16 16:03:02]

Fixed layout tests. 
In this case I think we don't need |args->PeekNext().IsEmpty()| as
|getPointerType()| will do the check and return true if empty.

This will match the usage in other places.

+    if (!getPointerType(args, false, event.primary_pointer_type))
+      return;
+  }
 
   event.global_x = event.x;
   event.global_y = event.y;
 
   if (force_layout_on_events_)
     widget()->UpdateAllLifecyclePhases();
 
   WebInputEventResult result = HandleInputEventOnViewOrPopup(event);
 
   // Long press might start a drag drop session. Complete it if so.
@@ skipping 378 matching lines @@
   return view()->MainFrame()->ToWebLocalFrame()->FrameWidget();
 }
 
 std::unique_ptr<WebInputEvent> EventSender::TransformScreenToWidgetCoordinates(
     const WebInputEvent& event) {
   return delegate()->TransformScreenToWidgetCoordinates(
       web_widget_test_proxy_base_, event);
 }
 
 }  // namespace test_runner