Revert of Set overflow: auto in StyleResolver::styleForDocument.

third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp

Index: third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp b/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
index 0017b8c275480b0502faf20ef7479b5d15b3a300..77476654eb6539630a8f07256cb0ae05ba2ed03b 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
@@ -620,12 +620,6 @@
   // ComputedStyle in Document::inheritHtmlAndBodyElementStyles.
   documentStyle->setDisplay(EDisplay::Block);
   documentStyle->setPosition(AbsolutePosition);
-
-  // Document::inheritHtmlAndBodyElementStyles will set the final overflow
-  // style values, but they should initially be auto to avoid premature
-  // scrollbar removal in PaintLayerScrollableArea::updateAfterStyleChange.
-  documentStyle->setOverflowX(OverflowAuto);
-  documentStyle->setOverflowY(OverflowAuto);
 
   document.setupFontBuilder(*documentStyle);