WebMouseEvent coordinates are now fractional & private

content/browser/browser_plugin/browser_plugin_guest.cc

Index: content/browser/browser_plugin/browser_plugin_guest.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest.cc b/content/browser/browser_plugin/browser_plugin_guest.cc
index 626114c3ed192028263ab9b2dc23139eb173383a..aa7b29c38737bca22017ec6040beab5453ed6aec 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest.cc
@@ -468,8 +468,9 @@ void BrowserPluginGuest::ResendEventToEmbedder(
   } else if (event.type() == blink::WebInputEvent::MouseWheel) {
     blink::WebMouseWheelEvent resent_wheel_event;
     memcpy(&resent_wheel_event, &event, sizeof(blink::WebMouseWheelEvent));
-    resent_wheel_event.x += offset_from_embedder.x();
-    resent_wheel_event.y += offset_from_embedder.y();
+    resent_wheel_event.setPositionInWidget(
+        resent_wheel_event.positionInWidget().x + offset_from_embedder.x(),
+        resent_wheel_event.positionInWidget().y + offset_from_embedder.y());
     resent_wheel_event.resendingPluginId = browser_plugin_instance_id_;
     // TODO(wjmaclean): Initialize latency info correctly for OOPIFs.
     // https://crbug.com/613628