Bug 1447358: Unifdef the old style system code. r=jwatt

Summary:
This has been automatically generated using:

  http://dotat.at/prog/unifdef/

And:

find $OBJDIR -type f -name '*.h' |
while read FILE; do
  echo "$FILE"
  unifdef -m -DMOZ_STYLO -UMOZ_OLD_STYLE "$FILE";
done

find $OBJDIR -type f -name '*.cpp' |
while read FILE; do
  echo "$FILE"
  unifdef -m -DMOZ_STYLO -UMOZ_OLD_STYLE "$FILE";
done

MozReview-Commit-ID: I4NdKqbMXzJ

Reviewers: jwatt

Bug #: 1447358

Differential Revision: https://phabricator.services.mozilla.com/D779

dom/base/Element.cpp

@@ -112,11 +112,6 @@
 #include "nsView.h"
 #include "nsViewManager.h"
 #include "nsIScrollableFrame.h"
-#ifdef MOZ_OLD_STYLE
-#include "mozilla/css/StyleRule.h" /* For nsCSSSelectorList */
-#include "nsCSSRuleProcessor.h"
-#include "nsRuleProcessorData.h"
-#endif
 #include "nsTextNode.h"
 
 #include "nsCycleCollectionParticipant.h"
@@ -3498,30 +3493,7 @@ Element::Closest(const nsAString& aSelector, ErrorResult& aResult)
       return const_cast<Element*>(Servo_SelectorList_Closest(this, aList));
     },
     [&](nsCSSSelectorList* aList) -> Element* {
-#ifdef MOZ_OLD_STYLE
-      if (!aList) {
-        // Either we failed (and aError already has the exception), or this
-        // is a pseudo-element-only selector that matches nothing.
-        return nullptr;
-      }
-      TreeMatchContext matchingContext(false,
-                                       nsRuleWalker::eRelevantLinkUnvisited,
-                                       OwnerDoc(),
-                                       TreeMatchContext::eNeverMatchVisited);
-      matchingContext.SetHasSpecifiedScope();
-      matchingContext.AddScopeElement(this);
-      for (nsINode* node = this; node; node = node->GetParentNode()) {
-        if (node->IsElement() &&
-            nsCSSRuleProcessor::SelectorListMatches(node->AsElement(),
-                                                    matchingContext,
-                                                    aList)) {
-          return node->AsElement();
-        }
-      }
-      return nullptr;
-#else
       MOZ_CRASH("old style system disabled");
-#endif
     }
   );
 }
@@ -3539,23 +3511,7 @@ Element::Matches(const nsAString& aSelector, ErrorResult& aError)
       return Servo_SelectorList_Matches(this, aList);
     },
     [&](nsCSSSelectorList* aList) {
-#ifdef MOZ_OLD_STYLE
-      if (!aList) {
-        // Either we failed (and aError already has the exception), or this
-        // is a pseudo-element-only selector that matches nothing.
-        return false;
-      }
-      TreeMatchContext matchingContext(false,
-                                       nsRuleWalker::eRelevantLinkUnvisited,
-                                       OwnerDoc(),
-                                       TreeMatchContext::eNeverMatchVisited);
-      matchingContext.SetHasSpecifiedScope();
-      matchingContext.AddScopeElement(this);
-      return nsCSSRuleProcessor::SelectorListMatches(this, matchingContext,
-                                                     aList);
-#else
       MOZ_CRASH("old style system disabled");
-#endif
     }
   );
 }
@@ -4356,7 +4312,6 @@ void
 Element::ClearServoData(nsIDocument* aDoc) {
   MOZ_ASSERT(IsStyledByServo());
   MOZ_ASSERT(aDoc);
-#ifdef MOZ_STYLO
   if (HasServoData()) {
     Servo_Element_ClearData(this);
   } else {
@@ -4370,9 +4325,6 @@ Element::ClearServoData(nsIDocument* aDoc) {
   if (aDoc->GetServoRestyleRoot() == this) {
     aDoc->ClearServoRestyleRoot();
   }
-#else
-  MOZ_CRASH("Accessing servo node data in non-stylo build");
-#endif
 }
 
 void