Track addition of Class.toGenericString() method

Increasing the vtable size for class by one.

Bug: 28666126
Change-Id: I89019d5f1b65725180b409decbd5b2570e24f5fe
Test: cts ran for libcore (libcore, harmony_java_lang, org) and host art tests.
diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index 21af15e..1fed190 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -571,7 +571,7 @@
   // The size of java.lang.Class.class.
   static uint32_t ClassClassSize(PointerSize pointer_size) {
     // The number of vtable entries in java.lang.Class.
-    uint32_t vtable_entries = Object::kVTableLength + 71;
+    uint32_t vtable_entries = Object::kVTableLength + 72;
     return ComputeClassSize(true, vtable_entries, 0, 0, 4, 1, 0, pointer_size);
   }