Use constant from RestApiServlet to skip JSON_MAGIC in acceptance tests

Change-Id: I9ebde3265a58eeafe0546733c9c962de28a3cb26
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/RestSession.java b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/RestSession.java
index 16f1c34..2c21e22 100644
--- a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/RestSession.java
+++ b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/RestSession.java
@@ -14,6 +14,8 @@
 
 package com.google.gerrit.acceptance;
 
+import static com.google.gerrit.httpd.restapi.RestApiServlet.JSON_MAGIC;
+
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;
@@ -37,7 +39,7 @@
     HttpGet get = new HttpGet("http://localhost:8080/a" + endPoint);
     HttpResponse response = getClient().execute(get);
     Reader reader = new InputStreamReader(response.getEntity().getContent());
-    reader.skip(4);
+    reader.skip(JSON_MAGIC.length);
     return reader;
   }
 
diff --git a/gerrit-httpd/src/main/java/com/google/gerrit/httpd/restapi/RestApiServlet.java b/gerrit-httpd/src/main/java/com/google/gerrit/httpd/restapi/RestApiServlet.java
index 32437fb..0859117 100644
--- a/gerrit-httpd/src/main/java/com/google/gerrit/httpd/restapi/RestApiServlet.java
+++ b/gerrit-httpd/src/main/java/com/google/gerrit/httpd/restapi/RestApiServlet.java
@@ -132,7 +132,7 @@
    * HTTP interface will need to always strip the first line of response data to
    * remove this magic header.
    */
-  private static final byte[] JSON_MAGIC;
+  public static final byte[] JSON_MAGIC;
 
   static {
     JSON_MAGIC = ")]}'\n".getBytes(UTF_8);