[Java hidl-gen] Fix multi-dimensional arrays (used within structures, not

as method arguments).

Bug: 31438033
Change-Id: I8e29ae8eca2a9ef8a320e37ca0bb79dcfa8a9b9a
diff --git a/Interface.h b/Interface.h
index 3e2a22a..4adfbae 100644
--- a/Interface.h
+++ b/Interface.h
@@ -46,11 +46,13 @@
 
     std::string getBaseName() const;
 
-    std::string getCppType(StorageMode mode,
-                           std::string *extra,
-                           bool specifyNamespaces) const override;
+    std::string getCppType(
+            StorageMode mode,
+            std::string *extra,
+            bool specifyNamespaces) const override;
 
-    std::string getJavaType() const override;
+    std::string getJavaType(
+            std::string *extra, bool forInitializer) const override;
 
     void emitReaderWriter(
             Formatter &out,