Simplify representation of stack frames. Remove the special types DartFrame/StubFrame and instead u…

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 657 matching lines @@
     return reinterpret_cast<RawObject**>(&ptr()->var_descriptors_);
   }
 
   intptr_t pointer_offsets_length_;
   // This cannot be boolean because of alignment issues on x64 architectures.
   intptr_t is_optimized_;
 
   // Variable length data follows here.
   int32_t data_[0];
 
-  friend class DartFrame;
-  friend class StubFrame;
+  friend class StackFrame;
 };
 
 
 class RawInstructions : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Instructions);
 
   RawCode* code_;
   intptr_t size_;
 
   // Variable length data follows here.
@@ skipping 496 matching lines @@
   intptr_t type_;  // Uninitialized, simple or complex.
   intptr_t flags_;  // Represents global/local, case insensitive, multiline.
 
   // Variable length data follows here.
   uint8_t data_[0];
 };
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_