fix(tabs): properly sets initial styles for inkbar when using centered

tabs

Author: Robert Messerle

src/components/tabs/js/tabsController.js

@@ -594,7 +594,14 @@ function MdTabsController ($scope, $element, $window, $timeout, $mdConstant, $md
         totalWidth = elements.paging.offsetWidth,
         tab = elements.tabs[index],
         left = tab.offsetLeft,
-        right = totalWidth - left - tab.offsetWidth;
+        right = totalWidth - left - tab.offsetWidth,
+        tabWidth;
+    if (ctrl.shouldCenterTabs) {
+      tabWidth = Array.prototype.slice.call(elements.tabs).reduce(function (value, element) {
+        return value + element.offsetWidth;
+      }, 0);
+      if (totalWidth > tabWidth) $timeout(updateInkBarStyles, 0, false);
+    }
     updateInkBarClassName();
     angular.element(elements.inkBar).css({ left: left + 'px', right: right + 'px' });
   }