Remove about:srcdoc url conversion.

content/public/browser/navigation_handle.cc

 // Copyright 2015 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 "content/public/browser/navigation_handle.h"
 
 #include <utility>
 
 #include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/frame_host/navigator.h"
@@ skipping 15 matching lines @@
     const GURL& url,
     RenderFrameHost* render_frame_host,
     bool committed,
     net::Error error) {
   std::unique_ptr<NavigationHandleImpl> handle_impl =
       NavigationHandleImpl::Create(
           url, static_cast<RenderFrameHostImpl*>(render_frame_host)
                    ->frame_tree_node(),
           true,   // is_renderer_initiated
           false,  // is_same_page
-          false,  // is_srcdoc
           base::TimeTicks::Now(), 0,
           false);  // started_from_context_menu
   handle_impl->set_render_frame_host(
       static_cast<RenderFrameHostImpl*>(render_frame_host));
   if (error != net::OK)
     handle_impl->set_net_error_code(error);
   if (committed)
     handle_impl->CallDidCommitNavigationForTesting(url);
   return std::unique_ptr<NavigationHandle>(std::move(handle_impl));
 }
 
 }  // namespace content