Revert of Delete AuthorStyleInfo and move its data into ComputedStyle.RareNonInheritedData.

Source/core/style/StyleRareNonInheritedData.cpp

Index: Source/core/style/StyleRareNonInheritedData.cpp
diff --git a/Source/core/style/StyleRareNonInheritedData.cpp b/Source/core/style/StyleRareNonInheritedData.cpp
index f5fbdcecd6b7c5a26be4025a21155311f7d0cfd1..ff6c76b708c17b61e61ab40b9ce5fb4d8e070368 100644
--- a/Source/core/style/StyleRareNonInheritedData.cpp
+++ b/Source/core/style/StyleRareNonInheritedData.cpp
@@ -123,8 +123,6 @@
     , m_hasInlineTransform(false)
     , m_resize(ComputedStyle::initialResize())
     , m_hasCompositorProxy(false)
-    , m_hasAuthorBackground(false)
-    , m_hasAuthorBorder(false)
 {
     m_maskBoxImage.setMaskDefaults();
 }
@@ -202,8 +200,6 @@
     , m_hasInlineTransform(o.m_hasInlineTransform)
     , m_resize(o.m_resize)
     , m_hasCompositorProxy(o.m_hasCompositorProxy)
-    , m_hasAuthorBackground(o.m_hasAuthorBackground)
-    , m_hasAuthorBorder(o.m_hasAuthorBorder)
 {
 }
 
@@ -284,9 +280,7 @@
         && m_requiresAcceleratedCompositingForExternalReasons == o.m_requiresAcceleratedCompositingForExternalReasons
         && m_hasInlineTransform == o.m_hasInlineTransform
         && m_resize == o.m_resize
-        && m_hasCompositorProxy == o.m_hasCompositorProxy
-        && m_hasAuthorBackground == o.m_hasAuthorBackground
-        && m_hasAuthorBorder == o.m_hasAuthorBorder;
+        && m_hasCompositorProxy == o.m_hasCompositorProxy;
 }
 
 bool StyleRareNonInheritedData::contentDataEquivalent(const StyleRareNonInheritedData& o) const