Revert "Revert "Use browsers JSON.parse for parsing JSON (#3)""

runtime/vm/bootstrap.h

Index: runtime/vm/bootstrap.h
diff --git a/runtime/vm/bootstrap.h b/runtime/vm/bootstrap.h
index 275c27db3d730626368567120dcb57c62ea0196f..b850cebc537ec020555ba2236b8dbe844040268b 100644
--- a/runtime/vm/bootstrap.h
+++ b/runtime/vm/bootstrap.h
@@ -45,6 +45,7 @@ class Bootstrap : public AllStatic {
   static const char isolate_source_[];
   static const char isolate_patch_[];
   static const char json_source_[];
+  static const char json_patch_[];
   static const char math_source_[];
   static const char math_patch_[];
   static const char mirrors_source_[];