Textarea, Input elements do not expose READONLY state in acc layer.

ui/accessibility/platform/ax_platform_node_mac.mm

Index: ui/accessibility/platform/ax_platform_node_mac.mm
diff --git a/ui/accessibility/platform/ax_platform_node_mac.mm b/ui/accessibility/platform/ax_platform_node_mac.mm
index a574369e197f190e9ce9ee09e7902d68444d4dc5..8ffcaaf681aaf7dd8ab93ff9d9d14cdb5df81819 100644
--- a/ui/accessibility/platform/ax_platform_node_mac.mm
+++ b/ui/accessibility/platform/ax_platform_node_mac.mm
@@ -53,14 +53,12 @@ RoleMap BuildRoleMap() {
       {ui::AX_ROLE_DIV, NSAccessibilityGroupRole},
       {ui::AX_ROLE_DOCUMENT, NSAccessibilityGroupRole},
       {ui::AX_ROLE_DRAWER, NSAccessibilityDrawerRole},
-      {ui::AX_ROLE_EDITABLE_TEXT, NSAccessibilityTextFieldRole},
       {ui::AX_ROLE_FIGCAPTION, NSAccessibilityGroupRole},
       {ui::AX_ROLE_FIGURE, NSAccessibilityGroupRole},
       {ui::AX_ROLE_FOOTER, NSAccessibilityGroupRole},
       {ui::AX_ROLE_FORM, NSAccessibilityGroupRole},
       {ui::AX_ROLE_GRID, NSAccessibilityGridRole},
       {ui::AX_ROLE_GROUP, NSAccessibilityGroupRole},
-      {ui::AX_ROLE_GROW_AREA, NSAccessibilityGrowAreaRole},
       {ui::AX_ROLE_HEADING, @"AXHeading"},
       {ui::AX_ROLE_HELP_TAG, NSAccessibilityHelpTagRole},
       {ui::AX_ROLE_IFRAME, NSAccessibilityGroupRole},
@@ -113,7 +111,6 @@ RoleMap BuildRoleMap() {
       {ui::AX_ROLE_SLIDER_THUMB, NSAccessibilityValueIndicatorRole},
       {ui::AX_ROLE_SPIN_BUTTON, NSAccessibilityIncrementorRole},
       {ui::AX_ROLE_SPLITTER, NSAccessibilitySplitterRole},
-      {ui::AX_ROLE_SPLIT_GROUP, NSAccessibilitySplitGroupRole},
       {ui::AX_ROLE_STATIC_TEXT, NSAccessibilityStaticTextRole},
       {ui::AX_ROLE_STATUS, NSAccessibilityGroupRole},
       {ui::AX_ROLE_SVG_ROOT, NSAccessibilityGroupRole},