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 7c2218da986177a43458fdd20b64c9074186a6b3..90a72e45f9f2a2836ce7cd19e4c349bcaf4e3785 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 },
@@ -261,7 +262,7 @@
 
 bool AXObject::isARIATextControl() const
 {
-    return ariaRoleAttribute() == TextFieldRole || ariaRoleAttribute() == SearchBoxRole;
+    return ariaRoleAttribute() == TextAreaRole || ariaRoleAttribute() == TextFieldRole || ariaRoleAttribute() == SearchBoxRole;
 }
 
 bool AXObject::isButton() const
@@ -318,6 +319,7 @@
 bool AXObject::isTextControl() const
 {
     switch (roleValue()) {
+    case TextAreaRole:
     case TextFieldRole:
     case ComboBoxRole:
     case SearchBoxRole:
@@ -342,6 +344,7 @@
     case RadioButtonRole:
     case SpinButtonRole:
     case TabRole:
+    case TextAreaRole:
     case TextFieldRole:
     case ToggleButtonRole:
         return true;
@@ -477,6 +480,7 @@
     case ToggleButtonRole:
         return queryString(WebLocalizedString::AXButtonActionVerb);
     case TextFieldRole:
+    case TextAreaRole:
         return queryString(WebLocalizedString::AXTextFieldActionVerb);
     case RadioButtonRole:
         return queryString(WebLocalizedString::AXRadioButtonActionVerb);
@@ -514,21 +518,8 @@
     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");
 }
 
@@ -1045,7 +1036,7 @@
 
 bool AXObject::isARIAControl(AccessibilityRole ariaRole)
 {
-    return isARIAInput(ariaRole) || ariaRole == ButtonRole
+    return isARIAInput(ariaRole) || ariaRole == TextAreaRole || ariaRole == ButtonRole
         || ariaRole == ComboBoxRole || ariaRole == SliderRole;
 }