Java: Add Content Flow module.

Author: michaelnebel

java/ql/lib/semmle/code/java/dataflow/internal/ContentDataFlow.qll

@@ -0,0 +1,7 @@
+private import java
+private import DataFlowImplSpecific
+private import codeql.dataflow.internal.ContentDataFlowImpl
+
+module ContentDataFlow {
+  import MakeImplContentDataFlow<Location, JavaDataFlow>
+}