[heap] Avoid overzealous inclusion of heap internal headers.

src/isolate.cc

 // Copyright 2012 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 <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/ast.h"
 #include "src/base/platform/platform.h"
 #include "src/base/sys-info.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/basic-block-profiler.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/compilation-cache.h"
 #include "src/compilation-statistics.h"
 #include "src/cpu-profiler.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
-#include "src/heap/spaces.h"
 #include "src/heap-profiler.h"
 #include "src/hydrogen.h"
 #include "src/ic/stub-cache.h"
 #include "src/interpreter/interpreter.h"
 #include "src/lithium-allocator.h"
 #include "src/log.h"
 #include "src/messages.h"
 #include "src/prototype.h"
 #include "src/regexp-stack.h"
 #include "src/runtime-profiler.h"
@@ skipping 2790 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8