Added some more roles to the list of roles that calculate their names from content.

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

Index: third_party/WebKit/Source/modules/accessibility/AXObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
index 1671402dcd5fb2400ead7a92e9c4bf9a26b00e83..564f40a06fe3f375bf400af26e9bf46957b11b9e 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
@@ -1718,9 +1718,12 @@ bool AXObject::includesARIAWidgetRole(const String& role) {
 }
 
 bool AXObject::nameFromContents() const {
+  // ARIA 1.1, section 5.2.7.5.
   switch (roleValue()) {
     case ButtonRole:
+    case CellRole:
     case CheckBoxRole:
+    case ColumnHeaderRole:
     case DirectoryRole:
     case DisclosureTriangleRole:
     case HeadingRole:
@@ -1734,12 +1737,16 @@ bool AXObject::nameFromContents() const {
     case MenuListOptionRole:
     case PopUpButtonRole:
     case RadioButtonRole:
+    case RowRole:

[dmazzoni, 2017/04/03 17:10:40]

Row may be problematic. Wouldn't that give the accessible name of the row the
text of all of its cells appended together?

Same with "tree". It seems like it would get all of the
items appended as its name.

The others seem fine.

+    case RowHeaderRole:
     case StaticTextRole:
     case StatusRole:
     case SwitchRole:
     case TabRole:
     case ToggleButtonRole:
+    case TreeRole:
     case TreeItemRole:
+    case UserInterfaceTooltipRole:
       return true;
     default:
       return false;