Adapt and reland old position sticky implementation

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

Index: third_party/WebKit/Source/core/css/resolver/StyleAdjuster.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleAdjuster.cpp b/third_party/WebKit/Source/core/css/resolver/StyleAdjuster.cpp
index ff610fc7505eb5cb88eae2596ef7f27a8ba0df42..d807c24a875aa02342ea17b6360b879b0b215b61 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleAdjuster.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleAdjuster.cpp
@@ -197,7 +197,7 @@ void StyleAdjuster::adjustComputedStyle(ComputedStyle& style, const ComputedStyl
         || style.hasFilter()
         || style.hasBlendMode()
         || style.hasIsolation()
-        || style.position() == FixedPosition
+        || style.hasViewportConstrainedPosition()
         || isInTopLayer(element, style)
         || hasWillChangeThatCreatesStackingContext(style)))
         style.setZIndex(0);
@@ -464,6 +464,12 @@ void StyleAdjuster::adjustStyleForDisplay(ComputedStyle& style, const ComputedSt
         && style.position() == RelativePosition)
         style.setPosition(StaticPosition);
 
+    // Cannot support position: sticky for table columns and column groups because current code is only doing
+    // background painting through columns / column groups
+    if ((style.display() == TABLE_COLUMN_GROUP || style.display() == TABLE_COLUMN)
+        && style.position() == StickyPosition)
+        style.setPosition(StaticPosition);
+
     // writing-mode does not apply to table row groups, table column groups, table rows, and table columns.
     // FIXME: Table cells should be allowed to be perpendicular or flipped with respect to the table, though.
     if (style.display() == TABLE_COLUMN || style.display() == TABLE_COLUMN_GROUP || style.display() == TABLE_FOOTER_GROUP