[heap] Less aggressive inlining of IncrementalMarking code.

src/heap/incremental-marking.h

Index: src/heap/incremental-marking.h
diff --git a/src/heap/incremental-marking.h b/src/heap/incremental-marking.h
index fb6e5cf6ab47be099da81231d24fe519c2b012de..3352879139401bc9c7b0f357964af91ac6fb03e7 100644
--- a/src/heap/incremental-marking.h
+++ b/src/heap/incremental-marking.h
@@ -165,11 +165,11 @@ class IncrementalMarking {
   void RecordCodeTargetPatch(Code* host, Address pc, HeapObject* value);
   void RecordCodeTargetPatch(Address pc, HeapObject* value);
 
-  inline void RecordWrites(HeapObject* obj);
+  void RecordWrites(HeapObject* obj);
 
-  inline void BlackToGreyAndUnshift(HeapObject* obj, MarkBit mark_bit);
+  void BlackToGreyAndUnshift(HeapObject* obj, MarkBit mark_bit);
 
-  inline void WhiteToGreyAndPush(HeapObject* obj, MarkBit mark_bit);
+  void WhiteToGreyAndPush(HeapObject* obj, MarkBit mark_bit);
 
   inline void SetOldSpacePageFlags(MemoryChunk* chunk) {
     SetOldSpacePageFlags(chunk, IsMarking(), IsCompacting());