browser: implement multiple permission requesting

chromecast/browser/cast_permission_manager.h

Index: chromecast/browser/cast_permission_manager.h
diff --git a/chromecast/browser/cast_permission_manager.h b/chromecast/browser/cast_permission_manager.h
index 5eab5a18d0a89d575b2fd38b69eeacdca138d320..ae17880e3c2309aaff7c33c716e87a1e16548266 100644
--- a/chromecast/browser/cast_permission_manager.h
+++ b/chromecast/browser/cast_permission_manager.h
@@ -24,10 +24,14 @@ class CastPermissionManager : public content::PermissionManager {
       const GURL& requesting_origin,
       bool user_gesture,
       const base::Callback<void(content::PermissionStatus)>& callback) override;
-  void CancelPermissionRequest(content::PermissionType permission,
-                               content::RenderFrameHost* render_frame_host,
-                               int request_id,
-                               const GURL& requesting_origin) override;
+  int RequestPermissions(
+      const std::vector<content::PermissionType>& permission,
+      content::RenderFrameHost* render_frame_host,
+      const GURL& requesting_origin,
+      bool user_gesture,
+      const base::Callback<void(
+          const std::vector<content::PermissionStatus>&)>& callback) override;
+  void CancelPermissionRequest(int request_id) override;
   void ResetPermission(content::PermissionType permission,
                        const GURL& requesting_origin,
                        const GURL& embedding_origin) override;