Remember owner class of patch code

runtime/vm/raw_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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/token.h"
@@ skipping 509 matching lines @@
 
 
 class RawPatchClass : public RawObject {
  private:
   RAW_HEAP_OBJECT_IMPLEMENTATION(PatchClass);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->patched_class_);
   }
   RawClass* patched_class_;
-  RawScript* script_;
+  RawClass* source_class_;
   RawObject** to() {
-    return reinterpret_cast<RawObject**>(&ptr()->script_);
+    return reinterpret_cast<RawObject**>(&ptr()->source_class_);
   }
 };
 
 
 class RawFunction : public RawObject {
  public:
   enum Kind {
     kRegularFunction,
     kClosureFunction,
     kSignatureFunction,  // represents a signature only without actual code.
@@ skipping 1146 matching lines @@
          kExternalUint64ArrayCid == kExternalInt8ArrayCid + 8 &&
          kExternalFloat32ArrayCid == kExternalInt8ArrayCid + 9 &&
          kExternalFloat64ArrayCid == kExternalInt8ArrayCid + 10 &&
          kStacktraceCid == kExternalInt8ArrayCid + 11);
   return (index >= kExternalInt8ArrayCid && index <= kExternalFloat64ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_