Make RCTPackagerConnection not depend on RCTBridge

Reviewed By: javache

Differential Revision: D5245497

fbshipit-source-id: 3c41dca98fc39c77d4b3c8932ee2a5b84880cf8c

React/DevSupport/RCTPackagerConnectionConfig.h

@@ -0,0 +1,23 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <React/RCTDefines.h>
+
+#if RCT_DEV // Only supported in dev mode
+
+@protocol RCTPackagerClientMethod;
+
+@protocol RCTPackagerConnectionConfig
+
+@property (nonatomic, copy, readonly) NSURL *packagerURL;
+@property (nonatomic, copy, readonly) NSDictionary<NSString *, id<RCTPackagerClientMethod>> *defaultPackagerMethods;
+
+@end
+
+#endif