document.documentElement.scrollTop/Left is zero

Source/core/html/HTMLBodyElement.cpp

Index: Source/core/html/HTMLBodyElement.cpp
diff --git a/Source/core/html/HTMLBodyElement.cpp b/Source/core/html/HTMLBodyElement.cpp
index ecf39231e90c8bee182b61938d351ffe0d36ffd0..eed6b0ccc044ff4651261af1214e5e0907678360 100644
--- a/Source/core/html/HTMLBodyElement.cpp
+++ b/Source/core/html/HTMLBodyElement.cpp
@@ -253,6 +253,12 @@ static int adjustForZoom(int value, Document* document)
 
 int HTMLBodyElement::scrollLeft()
 {
+    // FIXME: The specification is not clear about what is the expected behavior here:
+    // http://dev.w3.org/csswg/cssom-view/#dom-element-scrollleft
+    // Blink bails out in order to match other engines' behavior (WebKit, IE, Firefox and Opera12).
+    if (!document().inQuirksMode())
+        return 0;
+
     // Update the document's layout.
     Document& document = this->document();
     document.updateLayoutIgnorePendingStylesheets();
@@ -275,6 +281,12 @@ void HTMLBodyElement::setScrollLeft(int scrollLeft)
 
 int HTMLBodyElement::scrollTop()
 {
+    // FIXME: The specification is not clear about what is the expected behavior here:
+    // http://dev.w3.org/csswg/cssom-view/#dom-element-scrolltop .
+    // Blink bails out in order to match other engines' behavior (WebKit, IE, Firefox and Opera12).
+    if (!document().inQuirksMode())
+        return 0;
+
     // Update the document's layout.
     Document& document = this->document();
     document.updateLayoutIgnorePendingStylesheets();