Revert of Remove about:srcdoc url conversion.

chrome/browser/extensions/api/web_navigation/web_navigation_api_helpers.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.
 
 // Implements the Chrome Extensions WebNavigation API.
 
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api_helpers.h"
 
 #include <memory>
 #include <utility>
@@ skipping 46 matching lines @@
     event->filter_info = info;
     event_router->BroadcastEvent(std::move(event));
   }
 }
 
 }  // namespace
 
 // Constructs and dispatches an onBeforeNavigate event.
 void DispatchOnBeforeNavigate(content::NavigationHandle* navigation_handle) {
   GURL url(navigation_handle->GetURL());
+  if (navigation_handle->IsSrcdoc())
+    url = GURL(content::kAboutSrcDocURL);
 
   web_navigation::OnBeforeNavigate::Details details;
   details.tab_id =
       ExtensionTabUtil::GetTabId(navigation_handle->GetWebContents());
   details.url = url.spec();
   details.process_id = -1;
   details.frame_id = ExtensionApiFrameIdMap::GetFrameId(navigation_handle);
   details.parent_frame_id =
       ExtensionApiFrameIdMap::GetParentFrameId(navigation_handle);
   details.time_stamp = MilliSecondsFromTime(base::Time::Now());
@@ skipping 10 matching lines @@
 // event.
 void DispatchOnCommitted(events::HistogramValue histogram_value,
                          const std::string& event_name,
                          content::NavigationHandle* navigation_handle) {
   content::WebContents* web_contents = navigation_handle->GetWebContents();
   GURL url(navigation_handle->GetURL());
   content::RenderFrameHost* frame_host =
       navigation_handle->GetRenderFrameHost();
   ui::PageTransition transition_type = navigation_handle->GetPageTransition();
 
+  if (navigation_handle->IsSrcdoc())
+    url = GURL(content::kAboutSrcDocURL);
+
   std::unique_ptr<base::ListValue> args(new base::ListValue());
   std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
   dict->SetInteger(keys::kTabIdKey, ExtensionTabUtil::GetTabId(web_contents));
   dict->SetString(keys::kUrlKey, url.spec());
   dict->SetInteger(keys::kProcessIdKey, frame_host->GetProcess()->GetID());
   dict->SetInteger(keys::kFrameIdKey,
                    ExtensionApiFrameIdMap::GetFrameId(frame_host));
 
   if (navigation_handle->WasServerRedirect()) {
     transition_type = ui::PageTransitionFromInt(
@@ skipping 146 matching lines @@
   std::unique_ptr<Event> event(
       new Event(events::WEB_NAVIGATION_ON_TAB_REPLACED,
                 web_navigation::OnTabReplaced::kEventName,
                 web_navigation::OnTabReplaced::Create(details)));
   DispatchEvent(browser_context, std::move(event), GURL());
 }
 
 }  // namespace web_navigation_api_helpers
 
 }  // namespace extensions