PS - Filtering activeTab URL

chrome/browser/chromeos/extensions/extension_tab_util_delegate_chromeos.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTENSION_TAB_UTIL_DELEGATE_CHROMEOS_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTENSION_TAB_UTIL_DELEGATE_CHROMEOS_H_
 
 #include "base/macros.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 
 namespace api {
 namespace tabs {
 class Tab;
 }
 }
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
 class Extension;
 
 // In Public Sessions, apps and extensions are force-installed by admin policy
 // so the user does not get a chance to review the permissions for these apps.
 // This is not acceptable from a security standpoint, so we scrub the URL
-// returned by chrome.tabs API down to the origin.
+// returned by chrome.tabs API down to the origin unless the extension ID is
+// whitelisted.
 class ExtensionTabUtilDelegateChromeOS : public ExtensionTabUtil::Delegate {
  public:
   ExtensionTabUtilDelegateChromeOS();
   ~ExtensionTabUtilDelegateChromeOS() override;
 
   // ExtensionTabUtil::Delegate
   void ScrubTabForExtension(const Extension* extension,
                             content::WebContents* contents,
                             api::tabs::Tab* tab) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ExtensionTabUtilDelegateChromeOS);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTENSION_TAB_UTIL_DELEGATE_CHROMEOS_H_