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

chrome/browser/printing/cloud_print/cloud_print_setup_flow.h

Index: chrome/browser/printing/cloud_print/cloud_print_setup_flow.h
===================================================================
--- chrome/browser/printing/cloud_print/cloud_print_setup_flow.h	(revision 135175)
+++ chrome/browser/printing/cloud_print/cloud_print_setup_flow.h	(working copy)
@@ -10,13 +10,14 @@
 
 #include "base/memory/weak_ptr.h"
 #include "base/time.h"
-#include "chrome/browser/ui/webui/web_dialog_delegate.h"
 #include "chrome/common/net/gaia/gaia_auth_consumer.h"
 #include "chrome/common/net/gaia/gaia_auth_fetcher.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/web_dialogs/web_dialog_delegate.h"
+#include "ui/web_dialogs/web_dialog_ui.h"
 
 class CloudPrintServiceProcessHelper;
 class CloudPrintSetupMessageHandler;
@@ -49,7 +50,7 @@
 // handler and this class. In order to centralize all the flow control and
 // content in the WebUI, the WebUI object is given to this object by the
 // message handler through the Attach(WebUI*) method.
-class CloudPrintSetupFlow : public WebDialogDelegate,
+class CloudPrintSetupFlow : public web_dialogs::WebDialogDelegate,
                             public GaiaAuthConsumer {
  public:
   class Delegate {