Removing unused roles(7) from blink.

public/web/WebAXEnums.h

Index: public/web/WebAXEnums.h
diff --git a/public/web/WebAXEnums.h b/public/web/WebAXEnums.h
index 235635df1ce9bc4315fe01b0c53ea8c11b258a37..098e6076b619d484daada9af645ecfff93f76e09 100644
--- a/public/web/WebAXEnums.h
+++ b/public/web/WebAXEnums.h
@@ -78,7 +78,6 @@ enum WebAXRole {
     WebAXRoleArticle,
     WebAXRoleBanner,
     WebAXRoleBlockquote,
-    WebAXRoleBrowser,
     WebAXRoleBusyIndicator,
     WebAXRoleButton,
     WebAXRoleCanvas,
@@ -102,7 +101,6 @@ enum WebAXRole {
     WebAXRoleDisclosureTriangle,
     WebAXRoleDiv,
     WebAXRoleDocument,
-    WebAXRoleDrawer,
     WebAXRoleEditableText,
     WebAXRoleEmbeddedObject,
     WebAXRoleFigcaption,
@@ -113,7 +111,6 @@ enum WebAXRole {
     WebAXRoleGroup,
     WebAXRoleGrowArea,
     WebAXRoleHeading,
-    WebAXRoleHelpTag,
     WebAXRoleIframe,
     WebAXRoleIgnored,
     WebAXRoleImageMapLink,
@@ -133,7 +130,6 @@ enum WebAXRole {
     WebAXRoleMarquee,
     WebAXRoleMathElement,
     WebAXRoleMath,
-    WebAXRoleMatte,
     WebAXRoleMenuBar,
     WebAXRoleMenuButton,
     WebAXRoleMenuItem,
@@ -159,14 +155,12 @@ enum WebAXRole {
     WebAXRoleRowHeader,
     WebAXRoleRow,
     WebAXRoleRuby,
-    WebAXRoleRulerMarker,
     WebAXRoleRuler,
     WebAXRoleSVGRoot,
     WebAXRoleScrollArea,
     WebAXRoleScrollBar,
     WebAXRoleSeamlessWebArea,
     WebAXRoleSearch,
-    WebAXRoleSheet,
     WebAXRoleSlider,
     WebAXRoleSliderThumb,
     WebAXRoleSpinButtonPart,
@@ -175,7 +169,6 @@ enum WebAXRole {
     WebAXRoleSplitter,
     WebAXRoleStaticText,
     WebAXRoleStatus,
-    WebAXRoleSystemWide,
     WebAXRoleTabGroup,
     WebAXRoleTabList,
     WebAXRoleTabPanel,
@@ -193,7 +186,6 @@ enum WebAXRole {
     WebAXRoleTree,
     WebAXRoleUnknown,
     WebAXRoleUserInterfaceTooltip,
-    WebAXRoleValueIndicator,
     WebAXRoleWebArea,
     WebAXRoleWindow,
 };