Bug 633279 - 1px of checkerboarding between address bar and web page [r=stechz]

--HG--
extra : rebase_source : d0aa1401dfa9ef8eb81f74e0f7e6c1bff44a7045

mobile/chrome/content/bindings/browser.xml

@@ -1007,8 +1007,8 @@
             let scrollRangeX = contentSize.width - viewportSize.width;
             let scrollRangeY = contentSize.height - viewportSize.height;
 
-            x = Math.floor(Math.max(0, Math.min(scrollRangeX, contentView.scrollX + x)) - contentView.scrollX);
+            x = Math.floor(Math.max(0, Math.min(scrollRangeX, contentView.scrollX + x))) - contentView.scrollX;
-            y = Math.floor(Math.max(0, Math.min(scrollRangeY, contentView.scrollY + y)) - contentView.scrollY);
+            y = Math.floor(Math.max(0, Math.min(scrollRangeY, contentView.scrollY + y))) - contentView.scrollY;
 
             if (x == 0 && y == 0)
               return;

mobile/chrome/content/browser.js

@@ -1191,10 +1191,10 @@ Browser.MainDragger.prototype = {
 
     // Any leftover panning in doffset would bring controls into view. Add to sidebar
     // away panning for the total scroll offset.
-    let offsetX = Math.round(doffset.x);
+    let offsetX = doffset.x;
     if ((this._stopAtSidebar > 0 && offsetX > 0) ||
         (this._stopAtSidebar < 0 && offsetX < 0)) {
-      if (offsetX != Math.round(panOffset.x))
+      if (offsetX != panOffset.x)
         this._hitSidebar = true;
       doffset.x = panOffset.x;
     } else {