Rename 'composed tree' to 'flat tree' in the layout tests.

third_party/WebKit/LayoutTests/fast/dom/shadow/resources/event-dispatching.js

 var defaultPaddingSize = 40;
 
 function moveMouseOver(element)
 {
     if (!window.eventSender || !window.internals)
         return;
 
     var x = element.offsetLeft + element.offsetWidth / 2;
     var y;
     if (element.hasChildNodes() || window.internals.shadowRoot(element))
@@ skipping 98 matching lines @@
     ids.sort();
     var result = '';
     for (i = 0; i < ids.length; ++i) {
          result += ids[i];
          if (i != ids.length - 1)
              result += ', ';
     }
     return result;
 }
 
-function dumpComposedShadowTree(node, indent)
-{
-    indent = indent || "";
-    var output = indent + dumpNode(node) + "\n";
-    var child;
-    for (child = internals.firstChildInFlatTree(node); child; child = internals.nextSiblingInFlatTree(child))
-         output += dumpComposedShadowTree(child, indent + "\t");
-    return output;
-}
-
 function addEventListeners(nodes)
 {
     for (var i = 0; i < nodes.length; ++i) {
         addEventListenersToNode(getNodeInTreeOfTrees(nodes[i]));
     }
 }
 
 function addEventListenersToNode(node)
 {
     node.addEventListener('click', recordEvent, false);
@@ skipping 41 matching lines @@
     var clickEvent = document.createEvent("MouseEvents");
     clickEvent.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
     getNodeInTreeOfTrees(elementId).dispatchEvent(clickEvent);
     debugDispatchedEvent('click');
 }
 
 function showSandboxTree()
 {
     var sandbox = document.getElementById('sandbox');
     sandbox.offsetLeft;
-    debug('\n\nComposed Shadow Tree will be:\n' + dumpComposedShadowTree(sandbox));
+    debug('\n\nFlat Tree will be:\n' + dumpFlatTree(sandbox));
 }