[DevTools] Drop "ui" module from toolbox.

Source/devtools/front_end/ui/UIUtils.js

Index: Source/devtools/front_end/ui/UIUtils.js
diff --git a/Source/devtools/front_end/ui/UIUtils.js b/Source/devtools/front_end/ui/UIUtils.js
index 0730e8cc62146c6ea5a42cba7e7efe12aa53bb5f..e2c33c5fd0b1bc8a8227e7329637db3bf5b6b638 100644
--- a/Source/devtools/front_end/ui/UIUtils.js
+++ b/Source/devtools/front_end/ui/UIUtils.js
@@ -928,6 +928,25 @@ WebInspector.revertDomChanges = function(domChanges)
 }
 
 /**
+ * @param {!Element} element
+ * @param {?Element=} containerElement
+ * @return {!Size}
+ */
+WebInspector.measurePreferredSize = function(element, containerElement)
+{
+    containerElement = containerElement || element.ownerDocument.body;
+    containerElement.appendChild(element);
+    var fakingComponentRoot = WebInspector.installComponentRootStyles(element);
+    element.positionAt(0, 0);
+    var result = new Size(element.offsetWidth, element.offsetHeight);
+    element.positionAt(undefined, undefined);
+    element.remove();
+    if (fakingComponentRoot)
+        WebInspector.uninstallComponentRootStyles(element);
+    return result;
+}
+
+/**
  * @constructor
  * @param {boolean} autoInvoke
  */