during incr. reflow table cells have a unconstrained computed size, they need to ensure that a second constrained reflow is issued on the children, bug 237366, initial idea by saito@densan.co.jp r/sr=dbaron

layout/html/table/src/nsTableRowFrame.cpp

@@ -1203,6 +1203,8 @@ nsTableRowFrame::IR_TargetIsChild(nsIPresContext*          aPresContext,
     // which will bias the balancing. Leave the avail width alone, since it is a best guess.
     // After the table balances, the cell will get reflowed with the correct computed width.
     PRBool resetComputedWidth = aTableFrame.NeedStrategyInit() || aTableFrame.NeedStrategyBalance();
+    if (resetComputedWidth)
+      cellFrame->SetNeedPass2Reflow(PR_TRUE);
     InitChildReflowState(*aPresContext, cellAvailSize, aTableFrame.IsBorderCollapse(), 
                          p2t, kidRS, resetComputedWidth); 
 

layout/tables/nsTableRowFrame.cpp

@@ -1203,6 +1203,8 @@ nsTableRowFrame::IR_TargetIsChild(nsIPresContext*          aPresContext,
     // which will bias the balancing. Leave the avail width alone, since it is a best guess.
     // After the table balances, the cell will get reflowed with the correct computed width.
     PRBool resetComputedWidth = aTableFrame.NeedStrategyInit() || aTableFrame.NeedStrategyBalance();
+    if (resetComputedWidth)
+      cellFrame->SetNeedPass2Reflow(PR_TRUE);
     InitChildReflowState(*aPresContext, cellAvailSize, aTableFrame.IsBorderCollapse(), 
                          p2t, kidRS, resetComputedWidth);