Bug 1390409 part 1 - Remove unused ServoTraversalFlags param from ServoRestyleManager::ProcessPostTraversal. r=emilio

This was added in bug 1384769 for passing into Servo_TakeChangeHint,
but bug 1388031 changed Servo_TakeChangeHint to no longer take it, and
there is nothing else in the function which uses the flags.

MozReview-Commit-ID: LvZkJZHENUB

--HG--
extra : rebase_source : 609ad8d6be0946898622671b4f8092745e9da36a

layout/base/ServoRestyleManager.cpp

@@ -650,7 +650,6 @@ ServoRestyleManager::ProcessPostTraversal(
   Element* aElement,
   ServoStyleContext* aParentContext,
   ServoRestyleState& aRestyleState,
-  ServoTraversalFlags aFlags,
   bool aParentWasRestyled)
 {
   nsIFrame* styleFrame = nsLayoutUtils::GetStyleFrame(aElement);
@@ -829,7 +828,6 @@ ServoRestyleManager::ProcessPostTraversal(
         recreatedAnyContext |= ProcessPostTraversal(n->AsElement(),
                                                     upToDateContext,
                                                     childrenRestyleState,
-                                                    aFlags,
                                                     wasRestyled);
       } else if (traverseTextChildren && n->IsNodeOfType(nsINode::eTEXT)) {
         recreatedAnyContext |= ProcessPostTraversalForText(n, textState,
@@ -1027,7 +1025,7 @@ ServoRestyleManager::DoProcessPendingRestyles(ServoTraversalFlags aFlags)
         nsTArray<nsIFrame*> wrappersToRestyle;
         ServoRestyleState state(*styleSet, currentChanges, wrappersToRestyle);
         anyStyleChanged |=
-          ProcessPostTraversal(root, nullptr, state, aFlags,
+          ProcessPostTraversal(root, nullptr, state,
                                /* aParentWasRestyled = */ false);
       }
     }

layout/base/ServoRestyleManager.h

@@ -262,7 +262,6 @@ private:
   bool ProcessPostTraversal(Element* aElement,
                             ServoStyleContext* aParentContext,
                             ServoRestyleState& aRestyleState,
-                            ServoTraversalFlags aFlags,
                             bool aParentWasRestyled);
 
   struct TextPostTraversalState;