Add AX role conversions for EmbedObject, Figcaption and Figure for test_runner

content/shell/renderer/test_runner/web_ax_object_proxy.cc

Index: content/shell/renderer/test_runner/web_ax_object_proxy.cc
diff --git a/content/shell/renderer/test_runner/web_ax_object_proxy.cc b/content/shell/renderer/test_runner/web_ax_object_proxy.cc
index bb0c31a5077c32d0ad5078fd3acacf63c32c323d..b8386637b6d80ced58ef90692cbce5e7a28f34b9 100644
--- a/content/shell/renderer/test_runner/web_ax_object_proxy.cc
+++ b/content/shell/renderer/test_runner/web_ax_object_proxy.cc
@@ -78,6 +78,12 @@ std::string RoleToString(blink::WebAXRole role)
       return result.append("Drawer");
     case blink::WebAXRoleEditableText:
       return result.append("EditableText");
+    case blink::WebAXRoleEmbeddedObject:
+      return result.append("EmbeddedObject");
+    case blink::WebAXRoleFigcaption:
+      return result.append("Figcaption");
+    case blink::WebAXRoleFigure:
+      return result.append("Figure");
     case blink::WebAXRoleFooter:
       return result.append("Footer");
     case blink::WebAXRoleForm: