Issue #1751 -- Remove XP_MACOSX conditionals from the rest of the tree.

This also removes some PP abuse and takes file entries out of PP when no longer
needed without XP_MACOSX conditionals.

toolkit/themes/shared/media/videocontrols.css

@@ -165,15 +165,9 @@
   font-size: 11px;
 }
 
-%ifdef XP_MACOSX
-.durationLabel {
-  padding-top: 2px; /* center vertically with scrubber bar */
-}
-%else
 .durationLabel {
   padding-top: 0; /* center vertically with scrubber bar */
 }
-%endif
 
 .positionLabel {
   display: none;
@@ -259,15 +253,9 @@
   padding-top: 7px;
 }
 
-%ifdef XP_MACOSX
-.timeLabel {
-  padding-top: 7px; /* center vertically with scrubber bar */
-}
-%else
 .timeLabel {
   padding-top: 5px; /* center vertically with scrubber bar */
 }
-%endif
 
 .statusOverlay {
   -moz-box-align: center;