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

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 442 matching lines @@
         page()->focusController().setActive(true);
         LocalFrame* focusedFrame = page()->focusController().focusedFrame();
         if (focusedFrame) {
             Element* element = focusedFrame->document()->focusedElement();
             if (element && focusedFrame->selection().selection().isNone()) {
                 // If the selection was cleared while the WebView was not
                 // focused, then the focus element shows with a focus ring but
                 // no caret and does respond to keyboard inputs.
                 if (element->isTextFormControl()) {
                     element->updateFocusAppearance(SelectionBehaviorOnFocus::Restore);
-                } else if (element->isContentEditable()) {
+                } else if (isContentEditable(*element)) {
                     // updateFocusAppearance() selects all the text of
                     // contentseditable DIVs. So we set the selection explicitly
                     // instead. Note that this has the side effect of moving the
                     // caret back to the beginning of the text.
                     Position position(element, 0);
                     focusedFrame->selection().setSelection(VisibleSelection(position, SelDefaultAffinity));
                 }
             }
         }
     } else {
@@ skipping 36 matching lines @@
     if (!focused->editor().canEdit() && !inputMethodController.hasComposition())
         return false;
 
     // We should verify the parent node of this IME composition node are
     // editable because JavaScript may delete a parent node of the composition
     // node. In this case, WebKit crashes while deleting texts from the parent
     // node, which doesn't exist any longer.
     const EphemeralRange range = inputMethodController.compositionEphemeralRange();
     if (range.isNotNull()) {
         Node* node = range.startPosition().computeContainerNode();
-        if (!node || !node->isContentEditable())
+        if (!node || !isContentEditable(*node))
             return false;
     }
 
     // A keypress event is canceled. If an ongoing composition exists, then the
     // keydown event should have arisen from a handled key (e.g., backspace).
     // In this case we ignore the cancellation and continue; otherwise (no
     // ongoing composition) we exit and signal success only for attempts to
     // clear the composition.
     if (m_suppressNextKeypressEvent && !inputMethodController.hasComposition())
         return text.isEmpty();
@@ skipping 177 matching lines @@
         if (toHTMLTextAreaElement(*element).isDisabledOrReadOnly())
             return WebTextInputTypeNone;
         return WebTextInputTypeTextArea;
     }
 
     if (element->isHTMLElement()) {
         if (toHTMLElement(element)->isDateTimeFieldElement())
             return WebTextInputTypeDateTimeField;
     }
 
-    if (element->isContentEditable())
+    if (isContentEditable(*element))
         return WebTextInputTypeContentEditable;
 
     return WebTextInputTypeNone;
 }
 
 WebColor WebFrameWidgetImpl::backgroundColor() const
 {
     if (isTransparent())
         return Color::transparent;
     if (!m_localRoot->frameView())
@@ skipping 729 matching lines @@
 }
 
 LocalFrame* WebFrameWidgetImpl::focusedLocalFrameAvailableForIme() const
 {
     if (!m_imeAcceptEvents)
         return nullptr;
     return focusedLocalFrameInWidget();
 }
 
 } // namespace blink