Remove legacy restart 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 RUNTIME_VM_RAW_OBJECT_H_
 #define RUNTIME_VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/exceptions.h"
@@ skipping 1611 matching lines @@
 };
 
 
 class RawUnwindError : public RawError {
   RAW_HEAP_OBJECT_IMPLEMENTATION(UnwindError);
 
   RawObject** from() { return reinterpret_cast<RawObject**>(&ptr()->message_); }
   RawString* message_;
   RawObject** to() { return reinterpret_cast<RawObject**>(&ptr()->message_); }
   bool is_user_initiated_;
-  bool is_vm_restart_;
 };
 
 
 class RawInstance : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Instance);
 };
 
 
 class RawLibraryPrefix : public RawInstance {
   RAW_HEAP_OBJECT_IMPLEMENTATION(LibraryPrefix);
@@ skipping 800 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_RAW_OBJECT_H_