Cancel MIDI permission request infobar on MIDIAccess stop.

content/public/browser/browser_context.h

Index: content/public/browser/browser_context.h
diff --git a/content/public/browser/browser_context.h b/content/public/browser/browser_context.h
index cbac82f4df85a73933bc7173f56d62980ae3cdf6..985d8740679aec1ce7d3c401e7e84dea681cc557 100644
--- a/content/public/browser/browser_context.h
+++ b/content/public/browser/browser_context.h
@@ -35,6 +35,7 @@ class DownloadManager;
 class DownloadManagerDelegate;
 class GeolocationPermissionContext;
 class IndexedDBContext;
+class MidiPermissionContext;
 class ResourceContext;
 class SiteInstance;
 class StoragePartition;
@@ -125,16 +126,6 @@ class CONTENT_EXPORT BrowserContext : public base::SupportsUserData {
           const base::FilePath& partition_path,
           bool in_memory) = 0;
 
-  typedef base::Callback<void(bool)> MIDISysExPermissionCallback;
-
-  // Requests a permission to use system exclusive messages in MIDI events.
-  // |callback| will be invoked when the request is resolved.
-  virtual void RequestMIDISysExPermission(
-      int render_process_id,
-      int render_view_id,
-      const GURL& requesting_frame,
-      const MIDISysExPermissionCallback& callback) = 0;
-
   // Returns the resource context.
   virtual ResourceContext* GetResourceContext() = 0;
 
@@ -147,6 +138,10 @@ class CONTENT_EXPORT BrowserContext : public base::SupportsUserData {
   // return NULL, in which case geolocation requests will always be allowed.
   virtual GeolocationPermissionContext* GetGeolocationPermissionContext() = 0;
 
+  // Returns the MIDI permission context for this context. It's valid to
+  // return NULL, in which case MIDI requests will always be allowed.
+  virtual MidiPermissionContext* GetMidiPermissionContext() = 0;
+
   // Returns a special storage policy implementation, or NULL.
   virtual quota::SpecialStoragePolicy* GetSpecialStoragePolicy() = 0;
 };