Fix blink_perf.paint regression about tables

third_party/WebKit/Source/modules/accessibility/AXTable.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXTable.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXTable.cpp b/third_party/WebKit/Source/modules/accessibility/AXTable.cpp
index af68f1a426918f858b4f40cd3ed23dfb4c18c28b..7252410434631e3c055f08c261b6467ffa6a5d59 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXTable.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXTable.cpp
@@ -203,7 +203,8 @@ bool AXTable::isDataTable() const {
   int headersInFirstColumnCount = 0;
   for (int row = 0; row < numRows; ++row) {
     int headersInFirstRowCount = 0;
-    for (int col = 0; col < numCols; ++col) {
+    int nCols = firstBody->numCols(row);

[mstensho (USE GERRIT), 2017/01/20 10:02:04]

Now there's both numCols and nCols, which is confusing. Maybe you should rename
the original numCols to numColsInFirstBody instead, and declare numCols here
instead.

[a.suchit, 2017/01/23 06:35:32]

Done.

+    for (int col = 0; col < nCols; ++col) {
       LayoutTableCell* cell = firstBody->primaryCellAt(row, col);
       if (!cell)
         continue;