Exposing AXRole* correctly for HTML input types on mac.

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 280f3c49d20ea1091ac9c91f427aa11ce8df5191..a574369e197f190e9ce9ee09e7902d68444d4dc5 100644
--- a/ui/accessibility/platform/ax_platform_node_mac.mm
+++ b/ui/accessibility/platform/ax_platform_node_mac.mm
@@ -40,6 +40,8 @@ RoleMap BuildRoleMap() {
       {ui::AX_ROLE_COMBO_BOX, NSAccessibilityComboBoxRole},
       {ui::AX_ROLE_COMPLEMENTARY, NSAccessibilityGroupRole},
       {ui::AX_ROLE_CONTENT_INFO, NSAccessibilityGroupRole},
+      {ui::AX_ROLE_DATE, @"AXDateField"},
+      {ui::AX_ROLE_DATE_TIME, NSAccessibilityTextFieldRole},
       {ui::AX_ROLE_DEFINITION, NSAccessibilityGroupRole},
       {ui::AX_ROLE_DESCRIPTION_LIST_DETAIL, NSAccessibilityGroupRole},
       {ui::AX_ROLE_DESCRIPTION_LIST, NSAccessibilityListRole},
@@ -123,6 +125,7 @@ RoleMap BuildRoleMap() {
       {ui::AX_ROLE_TAB_PANEL, NSAccessibilityGroupRole},
       {ui::AX_ROLE_TEXT_AREA, NSAccessibilityTextAreaRole},
       {ui::AX_ROLE_TEXT_FIELD, NSAccessibilityTextFieldRole},
+      {ui::AX_ROLE_TIME, @"AXTimeField"},
       {ui::AX_ROLE_TIMER, NSAccessibilityGroupRole},
       {ui::AX_ROLE_TOGGLE_BUTTON, NSAccessibilityCheckBoxRole},
       {ui::AX_ROLE_TOOLBAR, NSAccessibilityToolbarRole},