Don't derive from ChromeURLDataManager::DataSource, and instead have these classes implement a dele…

chrome/browser/printing/cloud_print/cloud_print_setup_flow.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/printing/cloud_print/cloud_print_setup_flow.h"
 
 #include "base/json/json_writer.h"
 #include "base/memory/singleton.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 86 matching lines @@
     const base::WeakPtr<Delegate>& delegate,
     bool setup_done)
     : web_ui_(NULL),
       dialog_start_args_(args),
       last_auth_error_(GoogleServiceAuthError::None()),
       setup_done_(setup_done),
       process_control_(NULL),
       delegate_(delegate) {
   // TODO(hclam): The data source should be added once.
   profile_ = profile;
-  ChromeURLDataManager::AddDataSource(profile,
-      new CloudPrintSetupSource());
+  ChromeURLDataManager::AddDataSource(profile, new CloudPrintSetupSource);
 }
 
 CloudPrintSetupFlow::~CloudPrintSetupFlow() {
 }
 
 void CloudPrintSetupFlow::Focus() {
   // TODO(pranavk): implement this method.
   NOTIMPLEMENTED();
 }
 
@@ skipping 216 matching lines @@
 
 void CloudPrintSetupFlow::ExecuteJavascriptInIFrame(
     const string16& iframe_xpath,
     const string16& js) {
   if (web_ui_) {
     content::RenderViewHost* rvh =
         web_ui_->GetWebContents()->GetRenderViewHost();
     rvh->ExecuteJavascriptInWebFrame(iframe_xpath, js);
   }
 }