Revert 122501 - Percentage width replaced element in zero percent/fixed width container block incor…

Source/WebCore/rendering/RenderBox.cpp

Index: Source/WebCore/rendering/RenderBox.cpp
===================================================================
--- Source/WebCore/rendering/RenderBox.cpp	(revision 127650)
+++ Source/WebCore/rendering/RenderBox.cpp	(working copy)
@@ -2184,10 +2184,7 @@
             // containing block's block-flow.
             // https://bugs.webkit.org/show_bug.cgi?id=46496
             const LayoutUnit cw = isOutOfFlowPositioned() ? containingBlockLogicalWidthForPositioned(toRenderBoxModelObject(container())) : containingBlockLogicalWidthForContent();
-            Length containerLogicalWidth = containingBlock()->style()->logicalWidth();
-            // FIXME: Handle cases when containing block width is calculated or viewport percent.
-            // https://bugs.webkit.org/show_bug.cgi?id=91071
-            if (cw > 0 || (!cw && (containerLogicalWidth.isFixed() || containerLogicalWidth.isPercent())))
+            if (cw > 0)
                 return computeContentBoxLogicalWidth(minimumValueForLength(logicalWidth, cw));
         }
         // fall through