Re-land:

chrome/browser/ui/views/tabs/base_tab_strip.cc

Index: chrome/browser/ui/views/tabs/base_tab_strip.cc
===================================================================
--- chrome/browser/ui/views/tabs/base_tab_strip.cc	(revision 85284)
+++ chrome/browser/ui/views/tabs/base_tab_strip.cc	(working copy)
@@ -94,15 +94,14 @@
     // This can be null during shutdown. See http://crbug.com/42737.
     if (!widget)
       return;
+
+    widget->ResetLastMouseMoveFlag();
+
     // Force the close button (that slides under the mouse) to highlight by
     // saying the mouse just moved, but sending the same coordinates.
     DWORD pos = GetMessagePos();
     POINT cursor_point = {GET_X_LPARAM(pos), GET_Y_LPARAM(pos)};
     MapWindowPoints(NULL, widget->GetNativeView(), &cursor_point, 1);
-
-    static_cast<views::WidgetWin*>(widget)->ResetLastMouseMoveFlag();
-    // Return to message loop - otherwise we may disrupt some operation that's
-    // in progress.
     SendMessage(widget->GetNativeView(), WM_MOUSEMOVE, 0,
                 MAKELPARAM(cursor_point.x, cursor_point.y));
 #else