Remember owner class of patch code

runtime/vm/object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 1128 matching lines @@
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(InstantiatedTypeArguments,
                                    AbstractTypeArguments);
   friend class Class;
 };
 
 
 class PatchClass : public Object {
  public:
   RawClass* patched_class() const { return raw_ptr()->patched_class_; }
-  RawScript* script() const { return raw_ptr()->script_; }
+  RawClass* source_class() const { return raw_ptr()->source_class_; }
+  RawScript* Script() const;
 
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawPatchClass));
   }
 
-  static RawPatchClass* New(const Class& patched_class, const Script& script);
+  static RawPatchClass* New(const Class& patched_class,
+                            const Class& source_class);
 
  private:
   void set_patched_class(const Class& value) const;
-  void set_script(const Script& value) const;
+  void set_source_class(const Class& value) const;
   static RawPatchClass* New();
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(PatchClass, Object);
   friend class Class;
 };
 
 
 class Function : public Object {
  public:
   RawString* name() const { return raw_ptr()->name_; }
@@ skipping 5166 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_