Align the base of the shelf's context menu to the top edge of the shelf.

chrome/browser/ui/window_sizer/window_sizer_ash_uitest.cc

Index: chrome/browser/ui/window_sizer/window_sizer_ash_uitest.cc
diff --git a/chrome/browser/ui/window_sizer/window_sizer_ash_uitest.cc b/chrome/browser/ui/window_sizer/window_sizer_ash_uitest.cc
index 5ef9154d57ab71a8e4fc47060c49b7855ff2fb78..1756b3b3c08de679e2fdd8fcc9c4ecddc5d34be8 100644
--- a/chrome/browser/ui/window_sizer/window_sizer_ash_uitest.cc
+++ b/chrome/browser/ui/window_sizer/window_sizer_ash_uitest.cc
@@ -163,7 +163,8 @@ void OpenBrowserUsingContextMenuOnRootWindow(aura::Window* root_window) {
   gfx::Point chrome_icon =
       GetChromeIconBoundsForRootWindow(root_window).CenterPoint();
   gfx::Point release_point = chrome_icon;
-  release_point.Offset(50, -120);
+  // -153 moves the cursor up to the "New window" menu option.
+  release_point.Offset(0, -153);
   ui_controls::SendMouseMoveNotifyWhenDone(
       chrome_icon.x(), chrome_icon.y(),
       base::Bind(&WindowSizerContextMenuTest::Step1, release_point));