[css tables] Don't pass table width increase due to % columns to parents

third_party/WebKit/Source/core/layout/LayoutTable.cpp

Index: third_party/WebKit/Source/core/layout/LayoutTable.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutTable.cpp b/third_party/WebKit/Source/core/layout/LayoutTable.cpp
index c792917d29ab20c6786f14e074ef0461765cda50..c852e53bf8dcbdff4d0517b193c6d08e65c8d1a0 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTable.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutTable.cpp
@@ -292,7 +292,13 @@ void LayoutTable::updateLogicalWidth()
             availableContentLogicalWidth = shrinkLogicalWidthToAvoidFloats(marginStart, marginEnd, toLayoutBlockFlow(cb));
 
         // Ensure we aren't bigger than our available width.
-        setLogicalWidth(LayoutUnit(std::min(availableContentLogicalWidth, maxPreferredLogicalWidth()).floor()));
+        LayoutUnit maxWidth = maxPreferredLogicalWidth();
+        // scaledWidthFromPercentColumns depends on m_layoutStruct in TableLayoutAlgorithmAuto, which
+        // maxPreferredLogicalWidth fills in. So scaledWidthFromPercentColumns has to be called after
+        // maxPreferredLogicalWidth.
+        LayoutUnit scaledWidth = m_tableLayout->scaledWidthFromPercentColumns() + bordersPaddingAndSpacingInRowDirection();

[dgrogan, 2016/04/27 03:14:05]

fast/table/border-collapsing/cached-change-row-border-width.html, which changes
border width from JS, fails with this patch. I suspect it's because this patch
doesn't use the new borders properly but I haven't dug in yet.

+        maxWidth = std::max(scaledWidth, maxWidth);
+        setLogicalWidth(LayoutUnit(std::min(availableContentLogicalWidth, maxWidth).floor()));
     }
 
     // Ensure we aren't bigger than our max-width style.