Add ICMP header length constant am: 64a0446d9f am: 720e1b2a5a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/libs/net/+/22964660

Change-Id: Id39800acafaf750bfb5e85993bceb646f20b9f85
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/common/framework/com/android/net/module/util/NetworkStackConstants.java b/common/framework/com/android/net/module/util/NetworkStackConstants.java
index aa2dd4c..96f6aac 100644
--- a/common/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/common/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -135,7 +135,7 @@
      *     - https://tools.ietf.org/html/rfc792
      */
     public static final int ICMP_CHECKSUM_OFFSET = 2;
-
+    public static final int ICMP_HEADER_LEN = 8;
     /**
      * ICMPv6 constants.
      *