Introduce NodeTraversal::ancestorsOf() and inclusiveAncestors() for range-based for loop

third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp

Index: third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp b/third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp
index 7dcce8f6114cb023d986163d4379988352b7a274..5c40b7b74eea57a569252b84fd6aa51cae17c37e 100644
--- a/third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp
@@ -51,7 +51,7 @@ void SimplifyMarkupCommand::doApply(EditingState* editingState)
         if (node->hasChildren() || (node->isTextNode() && node->nextSibling()))
             continue;
 
-        ContainerNode* startingNode = node->parentNode();
+        ContainerNode* const startingNode = node->parentNode();
         if (!startingNode)
             continue;
         const ComputedStyle* startingStyle = startingNode->computedStyle();
@@ -80,8 +80,11 @@ void SimplifyMarkupCommand::doApply(EditingState* editingState)
 
         }
         if (topNodeWithStartingStyle) {
-            for (ContainerNode* node = startingNode; node != topNodeWithStartingStyle; node = node->parentNode())
-                nodesToRemove.append(node);
+            for (Node& node : NodeTraversal::inclusiveAncestorsOf(*startingNode)) {
+                if (node == topNodeWithStartingStyle)
+                    break;
+                nodesToRemove.append(static_cast<ContainerNode*>(&node));
+            }
         }
     }