Revert of Remove about:srcdoc url conversion.

chrome/browser/extensions/api/web_navigation/web_navigation_apitest.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 <list>
 #include <set>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 253 matching lines @@
                                const GURL& expected_url)
       : content::WebContentsObserver(web_contents),
         url_(expected_url),
         url_seen_(false),
         message_loop_runner_(new content::MessageLoopRunner) {}
   ~StartProvisionalLoadObserver() override {}
 
   void DidStartProvisionalLoadForFrame(
       content::RenderFrameHost* render_frame_host,
       const GURL& validated_url,
-      bool is_error_page) override {
+      bool is_error_page,
+      bool is_iframe_srcdoc) override {
     if (validated_url == url_) {
       url_seen_ = true;
       message_loop_runner_->Quit();
     }
   }
 
   // Run a nested message loop until navigation to the expected URL has started.
   void Wait() {
     if (url_seen_)
       return;
@@ skipping 527 matching lines @@
           "extensions/api_test/webnavigation/crash/b.html",
       embedded_test_server()->port()));
   ui_test_utils::NavigateToURL(browser(), url);
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
 #endif
 
 }  // namespace extensions