Allocation Info Tracking, continued.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 12e8a1b486c1d390a6def22c4c037422c2fcec88..de502db7c2ce83e03f4357d4ce5b6cb089ebd387 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2029,7 +2029,7 @@ class JSObject: public JSReceiver {
                                                ElementsKind to_kind);
 
   MUST_USE_RESULT MaybeObject* TransitionElementsKind(ElementsKind to_kind);
-  MUST_USE_RESULT MaybeObject* PossiblyTransitionArrayBoilerplate(
+  MUST_USE_RESULT MaybeObject* UpdateAllocationSiteInfo(
       ElementsKind to_kind);
 
   // Replaces an existing transition with a transition to a map with a FIELD.
@@ -7065,6 +7065,7 @@ class AllocationSiteInfo: public Struct {
 
   static const int kPayloadOffset = HeapObject::kHeaderSize;
   static const int kSize = kPayloadOffset + kPointerSize;
+  static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024;
 
   bool GetElementsKindPayload(ElementsKind* kind);
  private:
@@ -8350,7 +8351,7 @@ class JSArray: public JSObject {
   // Initialize the array with the given capacity. The function may
   // fail due to out-of-memory situations, but only if the requested
   // capacity is non-zero.
-  MUST_USE_RESULT MaybeObject* Initialize(int capacity);
+  MUST_USE_RESULT MaybeObject* Initialize(int capacity, int length = 0);
 
   // Initializes the array to a certain length.
   inline bool AllowsSetElementsLength();