Revert "Cherry-pick WebKit change r92139 to fix a LayoutTest crash"

This was causing HTML5 video to crash.

bug:6342146

This reverts commit d60e027437c746fb2412aef1c1cad6b1347c1b5e.

Change-Id: I15893f6c49bba2f0f738590d29c8b0c9024a98e6

1 files changed, 9 insertions, 13 deletions

diff --git a/Source/WebCore/css/CSSStyleSelector.cpp b/Source/WebCore/css/CSSStyleSelector.cpp
index e49ad2a..2424349 100644
--- a/Source/WebCore/css/CSSStyleSelector.cpp
+++ b/Source/WebCore/css/CSSStyleSelector.cpp
@@ -1237,15 +1237,6 @@ PassRefPtr<RenderStyle> CSSStyleSelector::styleForDocument(Document* document)
     return documentStyle.release();
 }
 
-static inline bool isAtShadowBoundary(Element* element)
-{
-    if (!element)
-        return false;
-
-    ContainerNode* parentNode = element->parentNode();
-    return parentNode && parentNode->isShadowBoundary();
-}
-
 // If resolveForRootDefault is true, style based on user agent style sheet only. This is used in media queries, where
 // relative units are interpreted according to document root element style, styled only with UA stylesheet
 
@@ -1288,10 +1279,6 @@ PassRefPtr<RenderStyle> CSSStyleSelector::styleForElement(Element* e, RenderStyl
         initForStyleResolve(e, defaultParent);
     }
 
-    // Don't propagate user-modify into shadow DOM
-    if (isAtShadowBoundary(e))
-        m_style->setUserModify(RenderStyle::initialUserModify());
-
     m_checker.m_matchVisitedPseudoClass = matchVisitedPseudoClass;
 
     m_style = RenderStyle::create();
@@ -1786,6 +1773,15 @@ static void addIntrinsicMargins(RenderStyle* style)
     }
 }
 
+static inline bool isAtShadowBoundary(Element* element)
+{
+    if (!element)
+        return false;
+
+    ContainerNode* parentNode = element->parentNode();
+    return parentNode && parentNode->isShadowBoundary();
+}
+
 void CSSStyleSelector::adjustRenderStyle(RenderStyle* style, RenderStyle* parentStyle, Element *e)
 {
     // Cache our original display.