Plumb the correct owner document through DocumentInit::m_owner.

chrome/browser/apps/app_browsertest_util.h

Index: chrome/browser/apps/app_browsertest_util.h
diff --git a/chrome/browser/apps/app_browsertest_util.h b/chrome/browser/apps/app_browsertest_util.h
index df758de4ea3c5505c1b927b0e12c53faee55d887..ac49f84e6868e601b100df21448c92f9387c20c2 100644
--- a/chrome/browser/apps/app_browsertest_util.h
+++ b/chrome/browser/apps/app_browsertest_util.h
@@ -90,9 +90,11 @@ class PlatformAppBrowserTest : public ExtensionApiTest {
   size_t GetAppWindowCountForApp(const std::string& app_id);
 
   // Creates an empty app window for |extension|.
-  AppWindow* CreateAppWindow(const Extension* extension);
+  AppWindow* CreateAppWindow(const Extension* extension,
+                             content::WebContents* creator_contents);
 
   AppWindow* CreateAppWindowFromParams(const Extension* extension,
+                                       content::WebContents* creator_contents,
                                        const AppWindow::CreateParams& params);
 
   // Closes |window| and waits until it's gone.