bug 537660 - fennec takes too long to respond to zoom command r=mfinkle,stechz,froystig

toolkit/content/Geometry.jsm

@@ -186,6 +186,7 @@ let Elements = {};
   ["contentShowing",     "bcast_contentShowing"],
   ["stack",              "stack"],
   ["panelUI",            "panel-container"],
+  ["viewBuffer",         "view-buffer"],
 ].forEach(function (elementGlobal) {
   let [name, id] = elementGlobal;
   Elements.__defineGetter__(name, function () {
@@ -456,9 +457,9 @@ Rect.prototype = {
   /** Ensure this rectangle is inside the other, if possible. Preserves w, h. */
   translateInside: function translateInside(other) {
     let offsetX = (this.left < other.left ? other.left - this.left :
-        (this.right > other.right ? this.right - other.right : 0));
+        (this.right > other.right ? other.right - this.right : 0));
     let offsetY = (this.top < other.top ? other.top - this.top :
-        (this.bottom > other.bottom ? this.bottom - other.bottom : 0));
+        (this.bottom > other.bottom ? other.bottom - this.bottom : 0));
     return this.translate(offsetX, offsetY);
   },