Make isolate.h usable without objects-inl.h header.

src/compiler/source-position.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/source-position.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/node-aux-data.h"
-#include "src/objects-inl.h"  // TODO(mstarzinger): Temporary cycle breaker!
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 class SourcePositionTable::Decorator final : public GraphDecorator {
  public:
   explicit Decorator(SourcePositionTable* source_positions)
       : source_positions_(source_positions) {}
 
@@ skipping 45 matching lines @@
          << ":" << pos.raw();
       needs_comma = true;
     }
   }
   os << "}";
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8