Backed out changeset ddb0ac65cba2 (bug 1168113) for possibly causing crashes on fx-team on a CLOSED TREE

--HG--
extra : rebase_source : 8df41dfd167b3150e053a23d5ef6f861f3d008f2

devtools/server/actors/highlighters.css

@@ -14,7 +14,7 @@
 */
 
 :-moz-native-anonymous .highlighter-container {
-  position: fixed;
+  position: absolute;
   width: 100%;
   height: 100%;
   /* The container for all highlighters doesn't react to pointer-events by

layout/style/ua.css

@@ -511,12 +511,12 @@ div:-moz-native-anonymous.moz-selectioncaret-right.hidden > div {
   visibility: hidden;
 }
 
-/* Custom content container in the CanvasFrame, positioned on top of everything
-   else, not reacting to pointer events. */
+/* Custom content container in the CanvasFrame, fixed positioned on top of
+   everything else, not reacting to pointer events. */
 div:-moz-native-anonymous.moz-custom-content-container {
   pointer-events: none;
   -moz-top-layer: top;
-  position: absolute;
+  position: fixed;
   top: 0;
   left: 0;
   width: 100%;