Backed out changeset b2f02ad2c82b (bug 1363361) for frequently failing browser_appmenu_reflows.js on OS X. r=backout a=backout

MozReview-Commit-ID: 5wPiUAKmDhi

dom/base/nsDOMWindowUtils.cpp

@@ -4441,26 +4441,6 @@ nsDOMWindowUtils::GetDirectionFromText(const nsAString& aString, int32_t* aRetva
   return NS_OK;
 }
 
-NS_IMETHODIMP
-nsDOMWindowUtils::EnsureDirtyRootFrame()
-{
-  nsIDocument* doc = GetDocument();
-  nsIPresShell* presShell = doc ? doc->GetShell() : nullptr;
-
-  if (!presShell) {
-    return NS_ERROR_FAILURE;
-  }
-
-  nsIFrame* frame = presShell->GetRootFrame();
-  if (!frame) {
-    return NS_ERROR_FAILURE;
-  }
-
-  presShell->FrameNeedsReflow(frame, nsIPresShell::eStyleChange,
-                              NS_FRAME_IS_DIRTY);
-  return NS_OK;
-}
-
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIsStyledByServo(bool* aStyledByServo)
 {

dom/interfaces/base/nsIDOMWindowUtils.idl

@@ -2023,14 +2023,6 @@ interface nsIDOMWindowUtils : nsISupports {
    */
   long getDirectionFromText(in AString aString);
 
-  /**
-   * Calls FrameNeedsReflow on that root frame so that a layout flush
-   * will be necessary.
-   *
-   * This should only be used for testing.
-   */
-  void ensureDirtyRootFrame();
-
   /**
    * Whether the current document is styled by Servo's style engine.
    *