Sends resolving action to Instant App installer

This change adds the action being resolved to an installing Instant
App to the installer so it may increase friction for untrusted or
potentially dangerous sources (NFC, nearby, etc.)

Change-Id: If6c47a219e4ddf453fb406e2b212b024aa24ade6
Fixes: 63102749
Test: manual - debugged the ephemeral installer to ensure extra
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index bad452c..d1e12aa 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -4455,6 +4455,12 @@
     public static final String EXTRA_EPHEMERAL_TOKEN = "android.intent.extra.EPHEMERAL_TOKEN";
 
     /**
+     * The action that triggered an instant application resolution.
+     * @hide
+     */
+    public static final String EXTRA_INSTANT_APP_ACTION = "android.intent.extra.INSTANT_APP_ACTION";
+
+    /**
      * The version code of the app to install components from.
      * @hide
      */