Convert MIDI permission requests to use WebContents in preparation for switching the code to using …

chrome/browser/media/midi_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_CHROME_MIDI_PERMISSION_CONTEXT_H_
-#define CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
+#ifndef CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_H_
+#define CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_H_
 
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "components/keyed_service/core/keyed_service.h"
-#include "content/public/browser/browser_context.h"
 
 namespace content {
 class WebContents;
 }
 
 class GURL;
 class MidiPermissionRequest;
 class PermissionQueueController;
 class PermissionRequestID;
 class Profile;
 
 // This class manages MIDI permissions flow. Used on the UI thread.
-class ChromeMidiPermissionContext : public KeyedService {
+class MidiPermissionContext : public KeyedService {
  public:
-  explicit ChromeMidiPermissionContext(Profile* profile);
-  virtual ~ChromeMidiPermissionContext();
+  explicit MidiPermissionContext(Profile* profile);
+  virtual ~MidiPermissionContext();
 
   // KeyedService methods:
   virtual void Shutdown() OVERRIDE;
 
   // Request to ask users permission about MIDI.
   void RequestMidiSysExPermission(
-      int render_process_id,
-      int render_view_id,
+      content::WebContents* web_contents,
       int bridge_id,
       const GURL& requesting_frame,
       bool user_gesture,
-      const content::BrowserContext::MidiSysExPermissionCallback& callback);
-
-  // Cancel a pending MIDI permission request.
-  void CancelMidiSysExPermissionRequest(int render_process_id,
-                                        int render_view_id,
-                                        int bridge_id,
-                                        const GURL& requesting_frame);
+      const base::Callback<void(bool)>& result_callback,
+      base::Closure* cancel_callback);
 
   // Called when the permission decision is made. If a permissions prompt is
   // shown to the user it will be called when the user selects an option
   // from that prompt.
   void NotifyPermissionSet(
       const PermissionRequestID& id,
       const GURL& requesting_frame,
-      const content::BrowserContext::MidiSysExPermissionCallback& callback,
+      const base::Callback<void(bool)>& callback,
       bool allowed);
 
  private:
   friend class MidiPermissionRequest;
 
+  // Cancel a pending MIDI permission request.
+  void CancelMidiSysExPermissionRequest(int render_process_id,
+                                        int render_view_id,
+                                        int bridge_id);
+
   // Decide whether the permission should be granted.
   // Calls PermissionDecided if permission can be decided non-interactively,
   // or NotifyPermissionSet if permission decided by presenting an infobar.
   void DecidePermission(
       content::WebContents* web_contents,
       const PermissionRequestID& id,
       const GURL& requesting_frame,
       const GURL& embedder,
       bool user_gesture,
-      const content::BrowserContext::MidiSysExPermissionCallback& callback);
+      const base::Callback<void(bool)>& callback);
 
   // Called when permission is granted without interactively asking the user.
   void PermissionDecided(
       const PermissionRequestID& id,
       const GURL& requesting_frame,
       const GURL& embedder,
-      const content::BrowserContext::MidiSysExPermissionCallback& callback,
+      const base::Callback<void(bool)>& callback,
       bool allowed);
 
   // Return an instance of the infobar queue controller, creating it if needed.
   PermissionQueueController* GetQueueController();
 
   // Removes any pending InfoBar request.
   void CancelPendingInfobarRequest(const PermissionRequestID& id);
 
   // Notify the context that a particular request object is no longer needed.
   void RequestFinished(MidiPermissionRequest* request);
 
   Profile* const profile_;
   bool shutting_down_;
   scoped_ptr<PermissionQueueController> permission_queue_controller_;
 
   base::ScopedPtrHashMap<std::string, MidiPermissionRequest> pending_requests_;
 
-  DISALLOW_COPY_AND_ASSIGN(ChromeMidiPermissionContext);
+  base::WeakPtrFactory<MidiPermissionContext> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MidiPermissionContext);
 };
 
-#endif  // CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
+#endif  // CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_H_