Merge branch 'stable-2.7'

* stable-2.7:
  Fix compilation failure in RefControlTest
  Verify access to source ref during add branch operation

Conflicts:
	gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectControl.java
	gerrit-server/src/test/java/com/google/gerrit/server/project/RefControlTest.java

Change-Id: I05be78df8d2717105146e7f285e092598756fff0

gerrit-server/src/test/java/com/google/gerrit/server/project/Util.java

@@ -219,7 +219,7 @@ public class Util {
 
     return new ProjectControl(Collections.<AccountGroup.UUID> emptySet(),
         Collections.<AccountGroup.UUID> emptySet(), projectCache,
-        sectionSorter, canonicalWebUrl, new MockUser(name, memberOf),
+        sectionSorter, null, canonicalWebUrl, new MockUser(name, memberOf),
         newProjectState(local));
   }