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..358540dc4485a747450c7977715261a187573889 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 +1737,14 @@ bool AXObject::nameFromContents() const {
     case MenuListOptionRole:
     case PopUpButtonRole:
     case RadioButtonRole:
+    case RowHeaderRole:
     case StaticTextRole:
     case StatusRole:
     case SwitchRole:
     case TabRole:
     case ToggleButtonRole:
     case TreeItemRole:
+    case UserInterfaceTooltipRole:
       return true;
     default:
       return false;