Update test result after crrev.com/914233002

Blink's CL changes approach of colspan's calculating.
Calculation is based on effective columns's conversion.
Malformed colspan such as <table><tr><td colspan="10"></td><th></th></tr></table>
now is calculated as {0, 1} not {0, 10}
Update also a test case so that we could check valid colspans.

BUG=457687

Review URL: https://codereview.chromium.org/956803003

Cr-Commit-Position: refs/heads/master@{#318267}

content/browser/accessibility/dump_accessibility_tree_browsertest.cc

@@ -1132,10 +1132,7 @@ IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest,
   RunHtmlTest(FILE_PATH_LITERAL("table-thead-tbody-tfoot.html"));
 }
 
-// crbug.com/457687 will correct ColumnIndexRange
-// Rebaseline after Blink's change goes in
-IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest,
-                       DISABLED_AccessibilityTableSpans) {
+IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityTableSpans) {
   RunHtmlTest(FILE_PATH_LITERAL("table-spans.html"));
 }
 

content/test/data/accessibility/html/table-spans-expected-mac.txt

@@ -3,11 +3,26 @@ AXWebArea AXTitle='Table example with rowspan and colspan'
 ++++AXRow AXIndex='0'
 ++++++AXCell AXColumnIndexRange={"len":1,"loc":0} AXRowIndexRange={"len":2,"loc":0}
 ++++++++AXStaticText AXValue='AD'
+++++++AXCell AXColumnIndexRange={"len":1,"loc":1} AXRowIndexRange={"len":1,"loc":0}
+++++++++AXStaticText AXValue='BC'
+++++AXRow AXIndex='1'
+++++++AXCell AXColumnIndexRange={"len":1,"loc":1} AXRowIndexRange={"len":1,"loc":1}
+++++++++AXStaticText AXValue='EF'
+++++AXColumn AXIndex='0'
+++++AXColumn AXIndex='1'
+++++AXGroup
+++AXTable
+++++AXRow AXIndex='0'
+++++++AXCell AXColumnIndexRange={"len":1,"loc":0} AXRowIndexRange={"len":2,"loc":0}
+++++++++AXStaticText AXValue='AD'
 ++++++AXCell AXColumnIndexRange={"len":2,"loc":1} AXRowIndexRange={"len":1,"loc":0}
 ++++++++AXStaticText AXValue='BC'
 ++++AXRow AXIndex='1'
-++++++AXCell AXColumnIndexRange={"len":2,"loc":1} AXRowIndexRange={"len":1,"loc":1}
+++++++AXCell AXColumnIndexRange={"len":1,"loc":1} AXRowIndexRange={"len":1,"loc":1}
 ++++++++AXStaticText AXValue='EF'
+++++++AXCell AXColumnIndexRange={"len":1,"loc":2} AXRowIndexRange={"len":1,"loc":1}
+++++++++AXStaticText AXValue='GH'
 ++++AXColumn AXIndex='0'
 ++++AXColumn AXIndex='1'
+++++AXColumn AXIndex='2'
 ++++AXGroup

content/test/data/accessibility/html/table-spans.html

@@ -19,6 +19,16 @@
     <td colspan="2">EF</td>
   </tr>
 </table>
+<table border=1>
+  <tr>
+    <td rowspan="2">AD</td>
+    <td colspan="2">BC</td>
+  </tr>
+  <tr>
+    <td>EF</td>
+    <td>GH</td>
+  </tr>
+</table>
 
 </body>
 </html>