Revert^8 "Make sure that const-class linkage is preserved."

Replaced two ReaderMutexLocks with WriterMutexLocks.
Removed some unnecessary debugging output.

Test: m test-art-host
Bug: 30627598
Original-Change-Id: Ie9b721464b4e9a5dcce8df8095548e983bba1fe8

This reverts commit 2c8c6b63da6ecb2ac701cc30f9b4fa4a8eea5cc8.

Change-Id: I3a1aeecf64e4b202cef61cceb248d48106a2f4a6
diff --git a/runtime/class_table.h b/runtime/class_table.h
index fe0bbb3..104871f 100644
--- a/runtime/class_table.h
+++ b/runtime/class_table.h
@@ -142,10 +142,14 @@
       REQUIRES_SHARED(Locks::mutator_lock_);
 
   // Returns the number of classes in previous snapshots.
-  size_t NumZygoteClasses() const REQUIRES(!lock_);
+  size_t NumZygoteClasses(ObjPtr<mirror::ClassLoader> defining_loader) const
+      REQUIRES(!lock_)
+      REQUIRES_SHARED(Locks::mutator_lock_);
 
   // Returns all off the classes in the lastest snapshot.
-  size_t NumNonZygoteClasses() const REQUIRES(!lock_);
+  size_t NumNonZygoteClasses(ObjPtr<mirror::ClassLoader> defining_loader) const
+      REQUIRES(!lock_)
+      REQUIRES_SHARED(Locks::mutator_lock_);
 
   // Update a class in the table with the new class. Returns the existing class which was replaced.
   mirror::Class* UpdateClass(const char* descriptor, mirror::Class* new_klass, size_t hash)
@@ -231,6 +235,11 @@
  private:
   void InsertWithoutLocks(ObjPtr<mirror::Class> klass) NO_THREAD_SAFETY_ANALYSIS;
 
+  size_t CountDefiningLoaderClasses(ObjPtr<mirror::ClassLoader> defining_loader,
+                                    const ClassSet& set) const
+      REQUIRES(lock_)
+      REQUIRES_SHARED(Locks::mutator_lock_);
+
   // Return true if we inserted the oat file, false if it already exists.
   bool InsertOatFileLocked(const OatFile* oat_file)
       REQUIRES(lock_)