[not for landing] Re-shuffle AllocationSite members

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 999ef030bcae076a25275ad366fd112946e35722..0ca79700ef78d71986e652f6d8c5324cc5e242c8 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -8107,7 +8107,6 @@ class AllocationSite: public Struct {
   // nested_site, but [[1, 2], 3, [4]] will have a list of two.
   DECL_ACCESSORS(nested_site, Object)
   DECL_INT_ACCESSORS(pretenure_data)
-  DECL_INT_ACCESSORS(pretenure_create_count)
   DECL_ACCESSORS(dependent_code, DependentCode)
   DECL_ACCESSORS(weak_next, Object)
 
@@ -8122,6 +8121,7 @@ class AllocationSite: public Struct {
   class DoNotInlineBit:         public BitField<bool,         29,  1> {};
 
   // Bitfields for pretenure_data
+  class MementoCreatedCountBits:public BitField<int,               0, 26> {};
   class PretenureDecisionBits:  public BitField<PretenureDecision, 26, 3> {};
   class DeoptDependentCodeBit:  public BitField<bool,              29, 1> {};
   STATIC_ASSERT(PretenureDecisionBits::kMax >= kLastPretenureDecisionValue);
@@ -8181,10 +8181,7 @@ class AllocationSite: public Struct {
   static const int kTransitionInfoOffset = HeapObject::kHeaderSize;
   static const int kNestedSiteOffset = kTransitionInfoOffset + kPointerSize;
   static const int kPretenureDataOffset = kNestedSiteOffset + kPointerSize;
-  static const int kPretenureCreateCountOffset =
-      kPretenureDataOffset + kPointerSize;
-  static const int kDependentCodeOffset =
-      kPretenureCreateCountOffset + kPointerSize;
+  static const int kDependentCodeOffset = kPretenureDataOffset + kPointerSize;
   static const int kWeakNextOffset = kDependentCodeOffset + kPointerSize;
   static const int kSize = kWeakNextOffset + kPointerSize;