Add @SystemApi annotations to ACTION_QUERY_PACKAGE_RESTART and related.

Make Intent.ACTION_QUERY_PACKAGE_RESTART and Intent.EXTRA_PACKAGES
accessible from GmsCore so that location and context components can
properly respond to the broadcast.

BUG: 19298558
Change-Id: I4b5cf4991c69d3aa745d03271187c65794df10b2
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index 37a46be..582802b 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -1760,6 +1760,7 @@
      * <p class="note">This is a protected intent that can only be sent
      * by the system.
      */
+    @SystemApi
     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
     public static final String ACTION_QUERY_PACKAGE_RESTART = "android.intent.action.QUERY_PACKAGE_RESTART";
     /**
@@ -3252,6 +3253,7 @@
     /**
      * @hide String array of package names.
      */
+    @SystemApi
     public static final String EXTRA_PACKAGES = "android.intent.extra.PACKAGES";
 
     /**