Move a bunch of GC related files to heap/ subdirectory

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 "src/v8.h"
 
 #include "src/ast.h"
 #include "src/base/platform/platform.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/compilation-cache.h"
 #include "src/cpu-profiler.h"
 #include "src/debug.h"
 #include "src/deoptimizer.h"
+#include "src/heap/spaces.h"
+#include "src/heap/sweeper-thread.h"
 #include "src/heap-profiler.h"
 #include "src/hydrogen.h"
 #include "src/isolate-inl.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"
 #include "src/sampler.h"
 #include "src/scopeinfo.h"
 #include "src/serialize.h"
 #include "src/simulator.h"
-#include "src/spaces.h"
 #include "src/stub-cache.h"
-#include "src/sweeper-thread.h"
 #include "src/version.h"
 #include "src/vm-state-inl.h"
 
 
 namespace v8 {
 namespace internal {
 
 base::Atomic32 ThreadId::highest_thread_id_ = 0;
 
 int ThreadId::AllocateThreadId() {
@@ skipping 2325 matching lines @@
   if (prev_ && prev_->Intercept(flag)) return true;
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 } }  // namespace v8::internal