Track libcore change 694e617f54a7bfbdad24913ce96f5d56f1a1960a

Added new method to string class, resized the mirror object.

Bug: 28666126
Change-Id: Ibed4e134c16512bde5183e73e130534f08256888
diff --git a/runtime/mirror/string-inl.h b/runtime/mirror/string-inl.h
index 6285542..f9d06c4 100644
--- a/runtime/mirror/string-inl.h
+++ b/runtime/mirror/string-inl.h
@@ -33,7 +33,7 @@
 namespace mirror {
 
 inline uint32_t String::ClassSize(size_t pointer_size) {
-  uint32_t vtable_entries = Object::kVTableLength + 56;
+  uint32_t vtable_entries = Object::kVTableLength + 57;
   return Class::ComputeClassSize(true, vtable_entries, 0, 0, 0, 1, 2, pointer_size);
 }