Migrate LongJumpScope to Thread.

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 70 matching lines @@
     // Script is unknown.
     // Append the formatted error or warning message.
     result = String::NewFormatted("%s: ", message_header);
     result = String::Concat(result, message);
   }
   return result.raw();
 }
 
 
 void Report::LongJump(const Error& error) {
-  Isolate::Current()->long_jump_base()->Jump(1, error);
+  Thread::Current()->long_jump_base()->Jump(1, error);
   UNREACHABLE();
 }
 
 
 void Report::LongJumpF(const Error& prev_error,
                        const Script& script, intptr_t token_pos,
                        const char* format, ...) {
   va_list args;
   va_start(args, format);
   LongJumpV(prev_error, script, token_pos, format, args);
@@ skipping 138 matching lines @@
     trace_warning.AddProperty("type", "JSCompatibilityWarning");
     trace_warning.AddProperty("script", script);
     trace_warning.AddProperty("tokenPos", token_pos);
     trace_warning.AddProperty("message", message);
   }
   trace_buffer->Trace(micros, js.ToCString(), true);  // Already escaped.
 }
 
 }  // namespace dart