text: // 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 "libcef/browser/extensions/extension_web_contents_observer.h"
  
  #include "chrome/common/webui_url_constants.h"
  #include "content/public/browser/child_process_security_policy.h"
  #include "content/public/browser/render_frame_host.h"
  #include "content/public/browser/render_process_host.h"
  #include "content/public/common/url_constants.h"
  #include "third_party/blink/public/common/chrome_debug_urls.h"
  
  namespace extensions {
  
  CefExtensionWebContentsObserver::CefExtensionWebContentsObserver(
      content::WebContents* web_contents)
      : ExtensionWebContentsObserver(web_contents),
        script_executor_(new ScriptExecutor(web_contents)) {}
  
  CefExtensionWebContentsObserver::~CefExtensionWebContentsObserver() {}
  
  // static
  void CefExtensionWebContentsObserver::CreateForWebContents(
      content::WebContents* web_contents) {
    content::WebContentsUserData<
        CefExtensionWebContentsObserver>::CreateForWebContents(web_contents);
  
    // Initialize this instance if necessary.
    FromWebContents(web_contents)->Initialize();
  }
  
  void CefExtensionWebContentsObserver::RenderFrameCreated(
      content::RenderFrameHost* render_frame_host) {
    ExtensionWebContentsObserver::RenderFrameCreated(render_frame_host);
  
    const Extension* extension = GetExtensionFromFrame(render_frame_host, false);
    if (!extension)
      return;
  
    int process_id = render_frame_host->GetProcess()->GetID();
    auto policy = content::ChildProcessSecurityPolicy::GetInstance();
  
    // Components of chrome that are implemented as extensions or platform apps
    // are allowed to use chrome://resources/ and chrome://theme/ URLs.
    if ((extension->is_extension() || extension->is_platform_app()) &&
        Manifest::IsComponentLocation(extension->location())) {
      policy->GrantRequestOrigin(
          process_id, url::Origin::Create(GURL(blink::kChromeUIResourcesURL)));
      policy->GrantRequestOrigin(
          process_id, url::Origin::Create(GURL(chrome::kChromeUIThemeURL)));
    }
  }
  
  WEB_CONTENTS_USER_DATA_KEY_IMPL(CefExtensionWebContentsObserver)
  
  }  // namespace extensions
  