[Editing][DOM][CodeHealth] Make Node::isContentEditable and Node::isRichEditable global functions.

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
index 5b3ea2c4647ec9d2185a2ae54c68b393ba12b969..1585354fce6f6cde6b69deb1aa9c78284951f5d8 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
@@ -426,16 +426,16 @@ bool AXLayoutObject::isEditable() const
     if (getLayoutObject() && getLayoutObject()->isTextControl())
         return true;
 
-    if (getNode() && getNode()->isContentEditable())
+    if (getNode() && isContentEditable(*getNode()))
         return true;
 
     if (isWebArea()) {
         Document& document = getLayoutObject()->document();
         HTMLElement* body = document.body();
-        if (body && body->isContentEditable())
+        if (body && isContentEditable(*body))
             return true;
 
-        return document.isContentEditable();
+        return isContentEditable(document);
     }
 
     return AXNodeObject::isEditable();
@@ -445,16 +445,16 @@ bool AXLayoutObject::isEditable() const
 // user-modify. Don't move this logic to AXNodeObject.
 bool AXLayoutObject::isRichlyEditable() const
 {
-    if (getNode() && getNode()->isContentRichlyEditable())
+    if (getNode() && isContentRichlyEditable(*getNode()))
         return true;
 
     if (isWebArea()) {
         Document& document = m_layoutObject->document();
         HTMLElement* body = document.body();
-        if (body && body->isContentRichlyEditable())
+        if (body && isContentRichlyEditable(*body))
             return true;
 
-        return document.isContentRichlyEditable();
+        return isContentRichlyEditable(document);
     }
 
     return AXNodeObject::isRichlyEditable();