Extract a minimal subset of WebDialogUI/WebDialogDelegate from src/chrome -> src/ui/web_dialogs

chrome/browser/ui/webui/test_web_dialog_delegate.h

Index: chrome/browser/ui/webui/test_web_dialog_delegate.h
===================================================================
--- chrome/browser/ui/webui/test_web_dialog_delegate.h	(revision 135175)
+++ chrome/browser/ui/webui/test_web_dialog_delegate.h	(working copy)
@@ -9,13 +9,13 @@
 #include <string>
 
 #include "base/compiler_specific.h"
-#include "chrome/browser/ui/webui/web_dialog_delegate.h"
 #include "googleurl/src/gurl.h"
 #include "ui/gfx/size.h"
+#include "ui/web_dialogs/web_dialog_delegate.h"
 
 namespace test {
 
-class TestWebDialogDelegate : public WebDialogDelegate {
+class TestWebDialogDelegate : public web_dialogs::WebDialogDelegate {
  public:
   explicit TestWebDialogDelegate(const GURL& url);
   virtual ~TestWebDialogDelegate();