[Media,Geolocation] Add permission bubble cancellation.

chrome/browser/media/chrome_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_
 
+#include "base/containers/scoped_ptr_hash_map.h"
 #include "base/memory/scoped_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 {
  public:
   explicit ChromeMidiPermissionContext(Profile* profile);
   virtual ~ChromeMidiPermissionContext();
 
@@ skipping 18 matching lines @@
   // 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,
       bool allowed);
 
  private:
+  friend class MidiPermissionRequest;
+
   // 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);
 
   // 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,
       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);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_