(Reland) Remove about:srcdoc url conversion.

content/browser/frame_host/navigation_request.cc

 // Copyright 2014 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/browser/frame_host/navigation_request.h"
 
 #include <utility>
 
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/devtools/render_frame_devtools_agent_host.h"
@@ skipping 286 matching lines @@
                                                            common_params_.url);
 
   // Inform the NavigationHandle that the navigation will commit.
   navigation_handle_->ReadyToCommitNavigation(render_frame_host);
 
   CommitNavigation();
 }
 
 void NavigationRequest::CreateNavigationHandle(int pending_nav_entry_id) {
   // TODO(nasko): Update the NavigationHandle creation to ensure that the
-  // proper values are specified for is_same_page and is_srcdoc.
+  // proper values are specified for is_same_page.
   navigation_handle_ = NavigationHandleImpl::Create(
       common_params_.url, frame_tree_node_, !browser_initiated_,
       false,  // is_same_page
-      false,  // is_srcdoc
       common_params_.navigation_start, pending_nav_entry_id,
       false);  // started_in_context_menu
 
   if (!begin_params_.searchable_form_url.is_empty()) {
     navigation_handle_->set_searchable_form_url(
         begin_params_.searchable_form_url);
     navigation_handle_->set_searchable_form_encoding(
         begin_params_.searchable_form_encoding);
   }
 }
@@ skipping 279 matching lines @@
   DCHECK_EQ(request_params_.has_user_gesture, begin_params_.has_user_gesture);
 
   render_frame_host->CommitNavigation(response_.get(), std::move(body_),
                                       common_params_, request_params_,
                                       is_view_source_);
 
   frame_tree_node_->ResetNavigationRequest(true);
 }
 
 }  // namespace content