Web MIDI: add RequestMIDISysExPermission to BrowserContext

chrome/browser/profiles/off_the_record_profile_impl.h

Index: chrome/browser/profiles/off_the_record_profile_impl.h
diff --git a/chrome/browser/profiles/off_the_record_profile_impl.h b/chrome/browser/profiles/off_the_record_profile_impl.h
index 9f6ed2964a97f0e21964c9f3957fd35b8290e163..b4be51dd39303fea7d85185b8a0bd1f6c82ac7cd 100644
--- a/chrome/browser/profiles/off_the_record_profile_impl.h
+++ b/chrome/browser/profiles/off_the_record_profile_impl.h
@@ -98,6 +98,12 @@ class OffTheRecordProfileImpl : public Profile {
       GetMediaRequestContextForStoragePartition(
           const base::FilePath& partition_path,
           bool in_memory) OVERRIDE;
+  virtual void RequestMIDISysExPermission(
+      int render_process_id,
+      int render_view_id,
+      int client_id,
+      const GURL& requesting_frame,
+      const MIDISysExPermissionCallback& callback) OVERRIDE;
   virtual content::ResourceContext* GetResourceContext() OVERRIDE;
   virtual content::GeolocationPermissionContext*
       GetGeolocationPermissionContext() OVERRIDE;