Tell each VM to flush their DNS cache.

bug:3095357
Change-Id: I93de24e3e5a7d8b94d55f4facfffc863a2b8c202
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index ac6b147..4b6333e 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -1223,6 +1223,13 @@
     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
     public static final String ACTION_TIMEZONE_CHANGED = "android.intent.action.TIMEZONE_CHANGED";
     /**
+     * Clear DNS Cache Action: This is broadcast when networks have changed and old
+     * DNS entries should be tossed.
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String ACTION_CLEAR_DNS_CACHE = "android.intent.action.CLEAR_DNS_CACHE";
+    /**
      * Alarm Changed Action: This is broadcast when the AlarmClock
      * application's alarm is set or unset.  It is used by the
      * AlarmClock application and the StatusBar service.