Do not interchange MOUSE_MOVED and MOUSE_DRAGGED events in Widget

ui/views/widget/root_view.cc

Index: ui/views/widget/root_view.cc
diff --git a/ui/views/widget/root_view.cc b/ui/views/widget/root_view.cc
index d05f1d8fd7bd2919ed6eab3ddf6ae5a9766d1215..81ee3e90780721f4cec5dd9eb992b8a27fad7785 100644
--- a/ui/views/widget/root_view.cc
+++ b/ui/views/widget/root_view.cc
@@ -429,6 +429,7 @@ bool RootView::OnMousePressed(const ui::MouseEvent& event) {
 }
 
 bool RootView::OnMouseDragged(const ui::MouseEvent& event) {
+  CHECK_EQ(ui::ET_MOUSE_DRAGGED, event.type());
   if (mouse_pressed_handler_) {
     SetMouseLocationAndFlags(event);
 
@@ -486,6 +487,7 @@ void RootView::OnMouseCaptureLost() {
 }
 
 void RootView::OnMouseMoved(const ui::MouseEvent& event) {
+  CHECK_EQ(ui::ET_MOUSE_MOVED, event.type());
   View* v = GetEventHandlerForPoint(event.location());
   // Find the first enabled view, or the existing move handler, whichever comes
   // first.  The check for the existing handler is because if a view becomes