Update comments for kUnsupportedClassLoaderContextEncoding.

(partially cherry picked from
commit 60bf7f88d43ea1b2694732df8a59e6ff43bc816b)

Bug: 249984283
Test: N/A
Change-Id: I55c344f3f178e9749b3a0b8c169c1da49d2a3c37
Merged-In: I23f651f013672defb2e61af0a744ff6e6d128bfb
diff --git a/runtime/class_loader_context.h b/runtime/class_loader_context.h
index ccc5c73..806ab5e 100644
--- a/runtime/class_loader_context.h
+++ b/runtime/class_loader_context.h
@@ -51,7 +51,10 @@
 
   // Special encoding used to denote a foreign ClassLoader was found when trying to encode class
   // loader contexts for each classpath element in a ClassLoader. See
-  // EncodeClassPathContextsForClassLoader. Keep in sync with PackageDexUsage in the framework.
+  // EncodeClassPathContextsForClassLoader. Keep in sync with PackageDexUsage in the framework
+  // (frameworks/base/services/core/java/com/android/server/pm/dex/PackageDexUsage.java) and
+  // DexUseManager in ART Services
+  // (art/libartservice/service/java/com/android/server/art/DexUseManager.java).
   static constexpr const char* kUnsupportedClassLoaderContextEncoding =
       "=UnsupportedClassLoaderContext=";