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

third_party/WebKit/Source/core/page/TouchAdjustment.cpp

Index: third_party/WebKit/Source/core/page/TouchAdjustment.cpp
diff --git a/third_party/WebKit/Source/core/page/TouchAdjustment.cpp b/third_party/WebKit/Source/core/page/TouchAdjustment.cpp
index 57c1e3c8d52c8962da65314cc90df1777a3ce9f0..f2d31df84715ba34ddf834812da3b11d37b5eb46 100644
--- a/third_party/WebKit/Source/core/page/TouchAdjustment.cpp
+++ b/third_party/WebKit/Source/core/page/TouchAdjustment.cpp
@@ -116,7 +116,7 @@ bool providesContextMenuItems(Node* node)
     ASSERT(node->layoutObject() || node->isShadowRoot());
     if (!node->layoutObject())
         return false;
-    if (node->isContentEditable())
+    if (isContentEditable(*node))
         return true;
     if (node->isLink())
         return true;
@@ -298,10 +298,10 @@ void compileSubtargetList(const HeapVector<Member<Node>>& intersectedNodes, Subt
         // Consolidate bounds for editable content.
         if (editableAncestors.contains(candidate))
             continue;
-        if (candidate->isContentEditable()) {
+        if (isContentEditable(*candidate)) {
             Node* replacement = candidate;
             Node* parent = candidate->parentOrShadowHostNode();
-            while (parent && parent->isContentEditable()) {
+            while (parent && isContentEditable(*parent)) {
                 replacement = parent;
                 if (editableAncestors.contains(replacement)) {
                     replacement = nullptr;