Track where WebContents are created in order to better understand issue.

chrome/browser/ui/browser_navigator.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/ui/browser_navigator.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
@@ skipping 18 matching lines @@
 #include "chrome/browser/ui/singleton_tabs.h"
 #include "chrome/browser/ui/status_bubble.h"
 #include "chrome/browser/ui/tab_helpers.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_url_handler.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_source.h"
 
 #if defined(USE_ASH)
 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager.h"
 #endif
 
 #if defined(USE_AURA)
 #include "ui/aura/window.h"
 #endif
 
 #if defined(ENABLE_EXTENSIONS)
@@ skipping 315 matching lines @@
 
 #if defined(USE_AURA)
   if (params.browser->window() &&
       params.browser->window()->GetNativeWindow()) {
     create_params.context =
         params.browser->window()->GetNativeWindow();
   }
 #endif
 
   WebContents* target_contents = WebContents::Create(create_params);
+  WebContentsSource::CreateForWebContentsAndLocation(target_contents,
+                                                     FROM_HERE);
 
   // New tabs can have WebUI URLs that will make calls back to arbitrary
   // tab helpers, so the entire set of tab helpers needs to be set up
   // immediately.
   BrowserNavigatorWebContentsAdoption::AttachTabHelpers(target_contents);
 #if defined(ENABLE_EXTENSIONS)
   extensions::TabHelper::FromWebContents(target_contents)->
       SetExtensionAppById(params.extension_app_id);
 #endif
   return target_contents;
@@ skipping 275 matching lines @@
   bool reverse_on_redirect = false;
   content::BrowserURLHandler::GetInstance()->RewriteURLIfNecessary(
       &rewritten_url, browser_context, &reverse_on_redirect);
 
   // Some URLs are mapped to uber subpages. Do not allow them in incognito.
   return !(rewritten_url.scheme() == content::kChromeUIScheme &&
            rewritten_url.host() == chrome::kChromeUIUberHost);
 }
 
 }  // namespace chrome