Bug 494659 / bug 494833 - Refresh new tab and all tabs icons on OS X. r=mstange

browser/themes/pinstripe/browser/browser.css

@@ -1701,14 +1701,31 @@ tabbrowser > tabbox > tabpanels {
   -moz-border-left-colors: rgba(0,0,0,0.25) rgba(255,255,255,0.15);
   -moz-border-right-colors: rgba(0,0,0,0.25) rgba(255,255,255,0.15);
   margin: 0;
-  padding: 0 4px;
+  padding: 0;
+}
+.tabs-newtab-button > .toolbarbutton-icon,
+.tabs-alltabs-button > .toolbarbutton-icon {
+  padding: 0;
 }
 .tabs-newtab-button {
   list-style-image: url(chrome://browser/skin/tabbrowser/newtab.png);
+  -moz-image-region: rect(0, 18px, 20px, 0);
+}
+.tabs-newtab-button:hover {
+  -moz-image-region: rect(0, 36px, 20px, 18px);
+}
+.tabs-newtab-button:hover:active {
+  -moz-image-region: rect(0, 54px, 20px, 36px);
 }
 .tabs-alltabs-button {
-  padding-top: 2px;
   list-style-image: url(chrome://browser/skin/tabbrowser/alltabs-box-bkgnd-icon.png);
+  -moz-image-region: rect(0, 22px, 20px, 0);
+}
+.tabs-alltabs-button:hover {
+  -moz-image-region: rect(0, 44px, 20px, 22px);
+}
+.tabs-alltabs-button:hover:active {
+  -moz-image-region: rect(0, 66px, 20px, 44px);
 }
 .tabs-container > .tabs-newtab-button:hover,
 .tabs-alltabs-button:hover {