Account for mouse leave events in dragging flow

third_party/WebKit/Source/core/input/MouseEventManager.cpp

Index: third_party/WebKit/Source/core/input/MouseEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/MouseEventManager.cpp b/third_party/WebKit/Source/core/input/MouseEventManager.cpp
index 2a94832d32f2622b16ed9661b5cec4462221a4dd..6f9bd387663739cba798f67fedf1514bc60ec86e 100644
--- a/third_party/WebKit/Source/core/input/MouseEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/MouseEventManager.cpp
@@ -718,7 +718,10 @@ WebInputEventResult MouseEventManager::HandleMouseDraggedEvent(
   //    that ends as a result of a mouse release does not send a mouse release
   //    event. As a result, m_mousePressed also ends up remaining true until
   //    the next mouse release event seen by the EventHandler.
-  if (event.Event().button != WebPointerProperties::Button::kLeft)
+  // 3. When pressing Esc key while dragging and the object is outside of the
+  //    we get a mouse leave event here
+  if (event.Event().button != WebPointerProperties::Button::kLeft ||
+      event.Event().GetType() == WebInputEvent::kMouseLeave)
     mouse_pressed_ = false;
 
   if (!mouse_pressed_)