[heap] Simplify adjusting of live bytes.

src/heap/spaces-inl.h

Index: src/heap/spaces-inl.h
diff --git a/src/heap/spaces-inl.h b/src/heap/spaces-inl.h
index 8fbeb26c57b10840dde39e1772835d4ae4755277..1567a8790d26ce5d0c88bd86847299cca5985fdf 100644
--- a/src/heap/spaces-inl.h
+++ b/src/heap/spaces-inl.h
@@ -221,7 +221,7 @@ void Page::InitializeFreeListCategories() {
   }
 }
 
-void MemoryChunk::IncrementLiveBytesFromGC(HeapObject* object, int by) {
+void MemoryChunk::IncrementLiveBytes(HeapObject* object, int by) {
   MemoryChunk::FromAddress(object->address())->IncrementLiveBytes(by);
 }
 
@@ -244,14 +244,6 @@ void MemoryChunk::IncrementLiveBytes(int by) {
   DCHECK_LE(static_cast<size_t>(live_byte_count_), size_);
 }
 
-void MemoryChunk::IncrementLiveBytesFromMutator(HeapObject* object, int by) {
-  MemoryChunk* chunk = MemoryChunk::FromAddress(object->address());
-  if (!chunk->InNewSpace() && !static_cast<Page*>(chunk)->SweepingDone()) {
-    static_cast<PagedSpace*>(chunk->owner())->Allocate(by);
-  }
-  chunk->IncrementLiveBytes(by);
-}
-
 bool PagedSpace::Contains(Address addr) {
   Page* p = Page::FromAddress(addr);
   if (!Page::IsValid(p)) return false;
@@ -439,7 +431,7 @@ AllocationResult PagedSpace::AllocateRawUnaligned(
     if (object != NULL) {
       if (heap()->incremental_marking()->black_allocation()) {
         Marking::MarkBlack(ObjectMarking::MarkBitFrom(object));
-        MemoryChunk::IncrementLiveBytesFromGC(object, size_in_bytes);
+        MemoryChunk::IncrementLiveBytes(object, size_in_bytes);
       }
     }
   }