Revert of Expose multiline attribute from blink

Source/modules/accessibility/AXObject.cpp

Index: Source/modules/accessibility/AXObject.cpp
diff --git a/Source/modules/accessibility/AXObject.cpp b/Source/modules/accessibility/AXObject.cpp
index e0780f59e949c68ac535494128bd9b6639e7331b..7264084d6244957d2b491cb92e1da4e7182f268f 100644
--- a/Source/modules/accessibility/AXObject.cpp
+++ b/Source/modules/accessibility/AXObject.cpp
@@ -28,6 +28,7 @@
 
 #include "config.h"
 #include "modules/accessibility/AXObject.h"
+
 #include "core/dom/NodeTraversal.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/htmlediting.h"
@@ -116,7 +117,7 @@
     { "tablist", TabListRole },
     { "tabpanel", TabPanelRole },
     { "text", StaticTextRole },
-    { "textbox", TextFieldRole },
+    { "textbox", TextAreaRole },
     { "timer", TimerRole },
     { "toolbar", ToolbarRole },
     { "tooltip", UserInterfaceTooltipRole },
@@ -262,7 +263,7 @@
 
 bool AXObject::isARIATextControl() const
 {
-    return ariaRoleAttribute() == TextFieldRole || ariaRoleAttribute() == SearchBoxRole;
+    return ariaRoleAttribute() == TextAreaRole || ariaRoleAttribute() == TextFieldRole || ariaRoleAttribute() == SearchBoxRole;
 }
 
 bool AXObject::isButton() const
@@ -319,6 +320,7 @@
 bool AXObject::isTextControl() const
 {
     switch (roleValue()) {
+    case TextAreaRole:
     case TextFieldRole:
     case ComboBoxRole:
     case SearchBoxRole:
@@ -343,6 +345,7 @@
     case RadioButtonRole:
     case SpinButtonRole:
     case TabRole:
+    case TextAreaRole:
     case TextFieldRole:
     case ToggleButtonRole:
         return true;
@@ -501,6 +504,7 @@
     case ToggleButtonRole:
         return queryString(WebLocalizedString::AXButtonActionVerb);
     case TextFieldRole:
+    case TextAreaRole:
         return queryString(WebLocalizedString::AXTextFieldActionVerb);
     case RadioButtonRole:
         return queryString(WebLocalizedString::AXRadioButtonActionVerb);
@@ -538,21 +542,8 @@
     return ButtonStateOff;
 }
 
-bool AXObject::isMultiline() const
-{
-    Node* node = this->node();
-    if (!node)
-        return false;
-
-    if (isHTMLTextAreaElement(*node))
-        return true;
-
-    if (node->hasEditableStyle())
-        return true;
-
-    if (!isNativeTextControl() && !isNonNativeTextControl())
-        return false;
-
+bool AXObject::ariaIsMultiline() const
+{
     return equalIgnoringCase(getAttribute(aria_multilineAttr), "true");
 }
 
@@ -1069,7 +1060,7 @@
 
 bool AXObject::isARIAControl(AccessibilityRole ariaRole)
 {
-    return isARIAInput(ariaRole) || ariaRole == ButtonRole
+    return isARIAInput(ariaRole) || ariaRole == TextAreaRole || ariaRole == ButtonRole
         || ariaRole == ComboBoxRole || ariaRole == SliderRole;
 }