Renamed attach to attachLayoutTree in comment missed in 2167063002.

Review-Url: https://codereview.chromium.org/2171173002
Cr-Commit-Position: refs/heads/master@{#407115}

third_party/WebKit/Source/core/layout/LayoutObject.h

@@ -179,7 +179,7 @@ const int showTreeCharacterOffset = 39;
 //
 // LayoutObjects are created during the DOM attachment. This phase computes
 // the style and create the LayoutObject associated with the Node (see
-// Node::attach). LayoutObjects are destructed during detachment (see
+// Node::attachLayoutTree). LayoutObjects are destructed during detachment (see
 // Node::detach), which can happen when the DOM node is removed from the
 // DOM tree, during page tear down or when the style is changed to contain
 // 'display: none'.