Handlify six allocator functions from the Heap.

src/heap.h

Index: src/heap.h
diff --git a/src/heap.h b/src/heap.h
index b8110920b22de919ee7968ec22e7461d45c8e6d4..89e9eb368c0f19ccc4334f947d03ddcf2ed55406 100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -812,21 +812,9 @@ class Heap {
   // Allocates an empty code cache.
   MUST_USE_RESULT MaybeObject* AllocateCodeCache();
 
-  // Allocates a serialized scope info.
-  MUST_USE_RESULT MaybeObject* AllocateScopeInfo(int length);
-
-  // Allocates an External object for v8's external API.
-  MUST_USE_RESULT MaybeObject* AllocateExternal(void* value);
-
   // Allocates an empty PolymorphicCodeCache.
   MUST_USE_RESULT MaybeObject* AllocatePolymorphicCodeCache();
 
-  // Allocates a pre-tenured empty AccessorPair.
-  MUST_USE_RESULT MaybeObject* AllocateAccessorPair();
-
-  // Allocates an empty TypeFeedbackInfo.
-  MUST_USE_RESULT MaybeObject* AllocateTypeFeedbackInfo();
-
   // Allocates an AliasedArgumentsEntry.
   MUST_USE_RESULT MaybeObject* AllocateAliasedArgumentsEntry(int slot);
 
@@ -1048,16 +1036,10 @@ class Heap {
   MUST_USE_RESULT MaybeObject* AllocateHashTable(
       int length, PretenureFlag pretenure = NOT_TENURED);
 
-  // Allocate a native (but otherwise uninitialized) context.
-  MUST_USE_RESULT MaybeObject* AllocateNativeContext();
-
   // Allocate a global context.
   MUST_USE_RESULT MaybeObject* AllocateGlobalContext(JSFunction* function,
                                                      ScopeInfo* scope_info);
 
-  // Allocate a module context.
-  MUST_USE_RESULT MaybeObject* AllocateModuleContext(ScopeInfo* scope_info);
-
   // Allocate a function context.
   MUST_USE_RESULT MaybeObject* AllocateFunctionContext(int length,
                                                        JSFunction* function);