Bug 1404268 - Remove top border-radius from the Windows 7 glass nav bar. r=dao

MozReview-Commit-ID: HM6vSqwAowz

--HG--
extra : rebase_source : e2c2ac79136afb9f42550a3b79c25e2b61031f99

browser/themes/windows/browser-aero.css

@@ -321,11 +321,6 @@
 }
 
 @media (-moz-windows-glass) {
-  #main-window[sizemode=normal] #nav-bar {
-    border-top-left-radius: 2.5px;
-    border-top-right-radius: 2.5px;
-  }
-
   /* Set to full fill-opacity to improve visibility of toolbar buttons on aero glass. */
   #TabsToolbar:not(:-moz-lwtheme) {
     --toolbarbutton-icon-fill-opacity: 1;