Fix background compilation issues when creating snapshots.

runtime/vm/report.cc

 // Copyright (c) 2014, 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.
 
 #include "vm/report.h"
 
 #include "vm/code_patcher.h"
 #include "vm/exceptions.h"
 #include "vm/flags.h"
 #include "vm/longjump.h"
@@ skipping 100 matching lines @@
   va_end(args);
   UNREACHABLE();
 }
 
 
 void Report::LongJumpV(const Error& prev_error,
                        const Script& script, TokenPosition token_pos,
                        const char* format, va_list args) {
   const Error& error = Error::Handle(LanguageError::NewFormattedV(
       prev_error, script, token_pos, Report::AtLocation,
-      kError, Heap::kNew,
+      kError, Heap::kOld,
       format, args));
   LongJump(error);
   UNREACHABLE();
 }
 
 
 void Report::MessageF(Kind kind,
                       const Script& script,
                       TokenPosition token_pos,
                       bool report_after_token,
@@ skipping 20 matching lines @@
       const String& snippet_msg = String::Handle(
           PrependSnippet(kind, script, token_pos, report_after_token, msg));
       OS::Print("%s", snippet_msg.ToCString());
       return;
     }
   }
   // Reporting an error (or a warning as error).
   const Error& error = Error::Handle(
       LanguageError::NewFormattedV(Error::Handle(),  // No previous error.
                                    script, token_pos, report_after_token,
-                                   kind, Heap::kNew,
+                                   kind, Heap::kOld,
                                    format, args));
   LongJump(error);
   UNREACHABLE();
 }
 
 }  // namespace dart