[heap] Remove markbits getter from raw address

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 <deque>
 
 #include "src/base/bits.h"
@@ skipping 18 matching lines @@
 
 // Forward declarations.
 class CodeFlusher;
 class MarkCompactCollector;
 class MarkingVisitor;
 template <MarkCompactMode mode>
 class RootMarkingVisitor;
 
 class ObjectMarking : public AllStatic {
  public:
-  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));
+  V8_INLINE static MarkBit MarkBitFrom(HeapObject* obj) {
+    const Address address = obj->address();
+    MemoryChunk* p = MemoryChunk::FromAddress(address);
+    return p->markbits()->MarkBitFromIndex(p->AddressToMarkbitIndex(address));
   }
 
   static Marking::ObjectColor Color(HeapObject* obj) {
     return Marking::Color(ObjectMarking::MarkBitFrom(obj));
   }
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ObjectMarking);
 };
 
@@ skipping 725 matching lines @@
 
  private:
   MarkCompactCollector* collector_;
 };
 
 V8_EXPORT_PRIVATE const char* AllocationSpaceName(AllocationSpace space);
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_MARK_COMPACT_H_