Bug 575726 - app button sits two pixels too high on the window frame. r=gavin

--HG--
extra : rebase_source : e002f507b0f6174465d9f4d75a9e8704d913c1a2

browser/themes/winstripe/browser/browser-aero.css

@@ -29,6 +29,10 @@
     margin-top: 8px;
   }
 
+  #main-window[sizemode="normal"][chromemargin^="0,"] {
+    margin-top: 2px;
+  }
+
   #main-window:not(:-moz-lwtheme)[inFullscreen="true"] {
     -moz-appearance: none;
     background-color: #556;