Fix x/y position of gesture scroll events.

content/common/input/synthetic_web_input_event_builders.cc

 // Copyright 2013 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/common/input/synthetic_web_input_event_builders.h"
 
 #include "base/logging.h"
 #include "content/common/input/web_touch_event_traits.h"
 #include "ui/events/base_event_utils.h"
 #include "ui/events/keycodes/keyboard_codes.h"
@@ skipping 43 matching lines @@
   result.phase = phase;
   return result;
 }
 
 WebMouseWheelEvent SyntheticWebMouseWheelEventBuilder::Build(float x,
                                                              float y,
                                                              float dx,
                                                              float dy,
                                                              int modifiers,
                                                              bool precise) {
+  return Build(x, y, 0, 0, dx, dy, modifiers, precise);
+}
+
+WebMouseWheelEvent SyntheticWebMouseWheelEventBuilder::Build(float x,
+                                                             float y,
+                                                             float global_x,
+                                                             float global_y,
+                                                             float dx,
+                                                             float dy,
+                                                             int modifiers,
+                                                             bool precise) {
   WebMouseWheelEvent result;
   result.type = WebInputEvent::MouseWheel;
+  result.globalX = global_x;
+  result.globalY = global_y;
   result.x = x;
   result.y = y;
   result.deltaX = dx;
   result.deltaY = dy;
   if (dx)
     result.wheelTicksX = dx > 0.0f ? 1.0f : -1.0f;
   if (dy)
     result.wheelTicksY = dy > 0.0f ? 1.0f : -1.0f;
   result.modifiers = modifiers;
   result.hasPreciseScrollingDeltas = precise;
@@ skipping 145 matching lines @@
   touches[index].state = WebTouchPoint::StateCancelled;
   WebTouchEventTraits::ResetType(
       WebInputEvent::TouchCancel, timeStampSeconds, this);
 }
 
 void SyntheticWebTouchEvent::SetTimestamp(base::TimeDelta timestamp) {
   timeStampSeconds = timestamp.InSecondsF();
 }
 
 }  // namespace content