Refactor ProtectedMediaIdentifierPermissionContext to derive from PermissionContextBase.

chrome/browser/media/protected_media_identifier_permission_context.h

 // Copyright 2013 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_MEDIA_PROTECTED_MEDIA_IDENTIFIER_PERMISSION_CONTEXT_H_
 #define CHROME_BROWSER_MEDIA_PROTECTED_MEDIA_IDENTIFIER_PERMISSION_CONTEXT_H_
 
-#include <map>
-#include <string>
-
-#include "base/callback_forward.h"
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/content_settings/permission_queue_controller.h"
+#include "chrome/browser/content_settings/permission_context_base.h"
 
 class PermissionRequestID;
 class Profile;
 
 namespace content {
 class RenderViewHost;
 class WebContents;
 }
 
 // Manages protected media identifier permissions flow, and delegates UI
 // handling via PermissionQueueController.
 class ProtectedMediaIdentifierPermissionContext
-    : public base::RefCountedThreadSafe<
-        ProtectedMediaIdentifierPermissionContext> {
+    : public PermissionContextBase {
  public:
   explicit ProtectedMediaIdentifierPermissionContext(Profile* profile);
 
-  void RequestProtectedMediaIdentifierPermission(
-      content::WebContents* web_contents,
-      const GURL& origin,
-      base::Callback<void(bool)> result_callback);
-
-  void CancelProtectedMediaIdentifierPermissionRequests(int render_process_id,
-                                                        int render_view_id,
-                                                        const GURL& origin);
-
-  // Called on the UI thread when the profile is about to be destroyed.
-  void ShutdownOnUIThread();
+  // In addition to the base class flow checks that it is only code from
+  // valid iframes. It also adds special logic when called through an extension.
+  void RequestPermission(content::WebContents* web_contents,
+                         const PermissionRequestID& id,
+                         const GURL& requesting_frame_origin,
+                         bool user_gesture,
+                         const BrowserPermissionCallback& callback) override;
 
  private:
-  friend class base::RefCountedThreadSafe<
-      ProtectedMediaIdentifierPermissionContext>;
-  ~ProtectedMediaIdentifierPermissionContext();
+  ~ProtectedMediaIdentifierPermissionContext() override;
 
-  Profile* profile() const { return profile_; }
-
-  // Return an instance of the infobar queue controller, creating it
-  // if necessary.
-  PermissionQueueController* QueueController();
-
-  // Notifies whether or not the corresponding bridge is allowed to use
-  // protected media identifier via
-  // SetProtectedMediaIdentifierPermissionResponse(). Called on the UI thread.
-  void NotifyPermissionSet(const PermissionRequestID& id,
-                           const GURL& origin,
-                           const base::Callback<void(bool)>& callback,
-                           bool allowed);
-
-  // Decide whether the protected media identifier permission should be granted.
-  // Calls PermissionDecided if permission can be decided non-interactively,
-  // or NotifyPermissionSet if permission decided by presenting an
-  // infobar to the user. Called on the UI thread.
-  void DecidePermission(const PermissionRequestID& id,
-                        const GURL& origin,
-                        const GURL& embedder,
-                        content::RenderViewHost* rvh,
-                        const base::Callback<void(bool)>& callback);
-
-  // Called when permission is granted without interactively asking
-  // the user. Can be overridden to introduce additional UI flow.
-  // Should ultimately ensure that NotifyPermissionSet is called.
-  // Called on the UI thread.
-  void PermissionDecided(const PermissionRequestID& id,
-                         const GURL& origin,
-                         const GURL& embedder,
-                         const base::Callback<void(bool)>& callback,
-                         bool allowed);
-
-  // Create an PermissionQueueController. overridden in derived classes to
-  // provide additional UI flow.  Called on the UI thread.
-  PermissionQueueController* CreateQueueController();
-
-  // Removes pending InfoBar requests that match |bridge_id| from the tab
-  // given by |render_process_id| and |render_view_id|.
-  void CancelPendingInfobarRequests(int render_process_id,
-                                    int render_view_id,
-                                    const GURL& origin);
-
-  // These must only be accessed from the UI thread.
-  Profile* const profile_;
-  bool shutting_down_;
-  scoped_ptr<PermissionQueueController> permission_queue_controller_;
+  void UpdateTabContext(const PermissionRequestID& id,
+                        const GURL& requesting_frame,
+                        bool allowed) override;
 
   DISALLOW_COPY_AND_ASSIGN(ProtectedMediaIdentifierPermissionContext);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_PROTECTED_MEDIA_IDENTIFIER_PERMISSION_CONTEXT_H_