Fix simulators.

runtime/vm/assembler_mips.cc

 // Copyright (c) 2013, 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/globals.h"  // NOLINT
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/longjump.h"
 #include "vm/runtime_entry.h"
@@ skipping 34 matching lines @@
 
 static bool CanEncodeBranchOffset(int32_t offset) {
   ASSERT(Utils::IsAligned(offset, 4));
   return Utils::IsInt(18, offset);
 }
 
 
 int32_t Assembler::EncodeBranchOffset(int32_t offset, int32_t instr) {
   if (!CanEncodeBranchOffset(offset)) {
     ASSERT(!use_far_branches());
-    Isolate::Current()->long_jump_base()->Jump(
+    Thread::Current()->long_jump_base()->Jump(
         1, Object::branch_offset_error());
   }
 
   // Properly preserve only the bits supported in the instruction.
   offset >>= 2;
   offset &= kBranchOffsetMask;
   return (instr & ~kBranchOffsetMask) | offset;
 }
 
 
@@ skipping 1234 matching lines @@
   Label stop;
   b(&stop);
   Emit(reinterpret_cast<int32_t>(message));
   Bind(&stop);
   break_(Instr::kStopMessageCode);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS