Drop unnecessary ancestor traversal in Range::selectNode()

third_party/WebKit/Source/core/dom/Range.cpp

Index: third_party/WebKit/Source/core/dom/Range.cpp
diff --git a/third_party/WebKit/Source/core/dom/Range.cpp b/third_party/WebKit/Source/core/dom/Range.cpp
index 0dad7073402860febc75e698ceb6fe87a146a749..57b8ad323cf34b14fb2aabf4ba523ea58346e10d 100644
--- a/third_party/WebKit/Source/core/dom/Range.cpp
+++ b/third_party/WebKit/Source/core/dom/Range.cpp
@@ -1088,26 +1088,6 @@ void Range::selectNode(Node* refNode, ExceptionState& exceptionState)
         return;
     }
 
-    // InvalidNodeTypeError: Raised if an ancestor of refNode is an Entity, Notation or
-    // DocumentType node or if refNode is a Document, DocumentFragment, ShadowRoot, Attr, Entity, or Notation
-    // node.
-    for (ContainerNode* anc = refNode->parentNode(); anc; anc = anc->parentNode()) {
-        switch (anc->nodeType()) {
-        case Node::ATTRIBUTE_NODE:
-        case Node::CDATA_SECTION_NODE:
-        case Node::COMMENT_NODE:
-        case Node::DOCUMENT_FRAGMENT_NODE:
-        case Node::DOCUMENT_NODE:
-        case Node::ELEMENT_NODE:
-        case Node::PROCESSING_INSTRUCTION_NODE:
-        case Node::TEXT_NODE:
-            break;
-        case Node::DOCUMENT_TYPE_NODE:
-            exceptionState.throwDOMException(InvalidNodeTypeError, "The node provided has an ancestor of type '" + anc->nodeName() + "'.");
-            return;
-        }
-    }
-
     switch (refNode->nodeType()) {
     case Node::CDATA_SECTION_NODE:
     case Node::COMMENT_NODE: