Updated AppState module to use new emitter system

Summary: AppState now subclasses NativeEventEmitter instead of using global RCTDeviceEventEmitter.

Reviewed By: javache

Differential Revision: D3310488

fbshipit-source-id: f0116599223f4411307385c0dab683659d8d63b6

React/Base/RCTEventDispatcher.h

@@ -35,7 +35,6 @@ RCT_EXTERN const NSInteger RCTTextUpdateLagWarningThreshold;
 RCT_EXTERN NSString *RCTNormalizeInputEventName(NSString *eventName);
 
 @protocol RCTEvent <NSObject>
-
 @required
 
 @property (nonatomic, strong, readonly) NSNumber *viewTag;
@@ -60,25 +59,25 @@ RCT_EXTERN NSString *RCTNormalizeInputEventName(NSString *eventName);
 @interface RCTEventDispatcher : NSObject <RCTBridgeModule>
 
 /**
- * Send an application-specific event that does not relate to a specific
- * view, e.g. a navigation or data update notification.
+ * Deprecated, do not use.
  */
-- (void)sendAppEventWithName:(NSString *)name body:(id)body;
+- (void)sendAppEventWithName:(NSString *)name body:(id)body
+__deprecated_msg("Subclass RCTEventEmitter instead");
 
 /**
- * Send a device or iOS event that does not relate to a specific view,
- * e.g.rotation, location, keyboard show/hide, background/awake, etc.
+ * Deprecated, do not use.
  */
-- (void)sendDeviceEventWithName:(NSString *)name body:(id)body;
+- (void)sendDeviceEventWithName:(NSString *)name body:(id)body
+__deprecated_msg("Subclass RCTEventEmitter instead");
 
 /**
- * Send a user input event. The body dictionary must contain a "target"
- * parameter, representing the React tag of the view sending the event
+ * Deprecated, do not use.
  */
-- (void)sendInputEventWithName:(NSString *)name body:(NSDictionary *)body;
+- (void)sendInputEventWithName:(NSString *)name body:(NSDictionary *)body
+__deprecated_msg("Use RCTDirectEventBlock or RCTBubblingEventBlock instead");
 
 /**
- * Send a text input/focus event.
+ * Send a text input/focus event. For internal use only.
  */
 - (void)sendTextEventWithType:(RCTTextEventType)type
                      reactTag:(NSNumber *)reactTag

React/Base/RCTEventDispatcher.m

@@ -126,7 +126,10 @@ RCT_EXPORT_MODULE()
     body[@"key"] = key;
   }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
   [self sendInputEventWithName:events[type] body:body];
+#pragma clang diagnostic pop
 }
 
 - (void)sendEvent:(id<RCTEvent>)event