[heap] Avoid overzealous inclusion of heap internal headers.

src/heap/mark-compact.h

 // 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.
 
 #ifndef V8_HEAP_MARK_COMPACT_H_
 #define V8_HEAP_MARK_COMPACT_H_
 
 #include "src/base/bits.h"
 #include "src/heap/spaces.h"
 
@@ skipping 10 matching lines @@
 
 // Forward declarations.
 class CodeFlusher;
 class MarkCompactCollector;
 class MarkingVisitor;
 class RootMarkingVisitor;
 
 
 class Marking : public AllStatic {
  public:
-  INLINE(static MarkBit MarkBitFrom(Address addr));
+  INLINE(static MarkBit MarkBitFrom(Address addr)) {
+    MemoryChunk* p = MemoryChunk::FromAddress(addr);
+    return p->markbits()->MarkBitFromIndex(p->AddressToMarkbitIndex(addr));
+  }
 
   INLINE(static MarkBit MarkBitFrom(HeapObject* obj)) {
     return MarkBitFrom(reinterpret_cast<Address>(obj));
   }
 
   // Impossible markbits: 01
   static const char* kImpossibleBitPattern;
   INLINE(static bool IsImpossible(MarkBit mark_bit)) {
     return !mark_bit.Get() && mark_bit.Next().Get();
   }
@@ skipping 992 matching lines @@
  private:
   MarkCompactCollector* collector_;
 };
 
 
 const char* AllocationSpaceName(AllocationSpace space);
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_MARK_COMPACT_H_