Remove SiblingRuleHelper

Source/core/dom/shadow/ShadowRoot.cpp

Index: Source/core/dom/shadow/ShadowRoot.cpp
diff --git a/Source/core/dom/shadow/ShadowRoot.cpp b/Source/core/dom/shadow/ShadowRoot.cpp
index 736858e7c689cee2c4cfe56999fce030dd6d6e2f..bbe536bd8dcbc74cd20f13ad4dcdf25841459d18 100644
--- a/Source/core/dom/shadow/ShadowRoot.cpp
+++ b/Source/core/dom/shadow/ShadowRoot.cpp
@@ -31,7 +31,6 @@
 #include "core/css/StyleSheetList.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/ElementTraversal.h"
-#include "core/dom/SiblingRuleHelper.h"
 #include "core/dom/StyleEngine.h"
 #include "core/dom/Text.h"
 #include "core/dom/shadow/ElementShadow.h"
@@ -147,8 +146,8 @@ void ShadowRoot::recalcStyle(StyleRecalcChange change)
     if (styleChangeType() >= SubtreeStyleChange)
         change = Force;
 
-    if (change < Force && childNeedsStyleRecalc())
-        SiblingRuleHelper(this).checkForChildrenAdjacentRuleChanges();
+    if (change < Force && hasRareData() && childNeedsStyleRecalc())
+        checkForChildrenAdjacentRuleChanges();
 
     // There's no style to update so just calling recalcStyle means we're updated.
     clearNeedsStyleRecalc();
@@ -383,81 +382,4 @@ StyleSheetList* ShadowRoot::styleSheets()
     return m_shadowRootRareData->styleSheets();
 }
 
-bool ShadowRoot::childrenSupportStyleSharing() const
-{
-    if (!m_shadowRootRareData)
-        return false;
-    return !m_shadowRootRareData->childrenAffectedByFirstChildRules()
-        && !m_shadowRootRareData->childrenAffectedByLastChildRules()
-        && !m_shadowRootRareData->childrenAffectedByDirectAdjacentRules()
-        && !m_shadowRootRareData->childrenAffectedByIndirectAdjacentRules()
-        && !m_shadowRootRareData->childrenAffectedByForwardPositionalRules()
-        && !m_shadowRootRareData->childrenAffectedByBackwardPositionalRules();
-}
-
-bool ShadowRoot::childrenAffectedByPositionalRules() const
-{
-    return m_shadowRootRareData && (m_shadowRootRareData->childrenAffectedByForwardPositionalRules() || m_shadowRootRareData->childrenAffectedByBackwardPositionalRules());
-}
-
-bool ShadowRoot::childrenAffectedByFirstChildRules() const
-{
-    return m_shadowRootRareData && m_shadowRootRareData->childrenAffectedByFirstChildRules();
-}
-
-bool ShadowRoot::childrenAffectedByLastChildRules() const
-{
-    return m_shadowRootRareData && m_shadowRootRareData->childrenAffectedByLastChildRules();
-}
-
-bool ShadowRoot::childrenAffectedByDirectAdjacentRules() const
-{
-    return m_shadowRootRareData && m_shadowRootRareData->childrenAffectedByDirectAdjacentRules();
-}
-
-bool ShadowRoot::childrenAffectedByIndirectAdjacentRules() const
-{
-    return m_shadowRootRareData && m_shadowRootRareData->childrenAffectedByIndirectAdjacentRules();
-}
-
-bool ShadowRoot::childrenAffectedByForwardPositionalRules() const
-{
-    return m_shadowRootRareData && m_shadowRootRareData->childrenAffectedByForwardPositionalRules();
-}
-
-bool ShadowRoot::childrenAffectedByBackwardPositionalRules() const
-{
-    return m_shadowRootRareData && m_shadowRootRareData->childrenAffectedByBackwardPositionalRules();
-}
-
-void ShadowRoot::setChildrenAffectedByForwardPositionalRules()
-{
-    ensureShadowRootRareData()->setChildrenAffectedByForwardPositionalRules(true);
-}
-
-void ShadowRoot::setChildrenAffectedByDirectAdjacentRules()
-{
-    ensureShadowRootRareData()->setChildrenAffectedByDirectAdjacentRules(true);
-}
-
-void ShadowRoot::setChildrenAffectedByIndirectAdjacentRules()
-{
-    ensureShadowRootRareData()->setChildrenAffectedByIndirectAdjacentRules(true);
-}
-
-void ShadowRoot::setChildrenAffectedByBackwardPositionalRules()
-{
-    ensureShadowRootRareData()->setChildrenAffectedByBackwardPositionalRules(true);
-}
-
-void ShadowRoot::setChildrenAffectedByFirstChildRules()
-{
-    ensureShadowRootRareData()->setChildrenAffectedByFirstChildRules(true);
-}
-
-void ShadowRoot::setChildrenAffectedByLastChildRules()
-{
-    ensureShadowRootRareData()->setChildrenAffectedByLastChildRules(true);
-}
-
 }