Remove support for pretenuring as it is not fully implemented and is currently turned on for a very…

runtime/vm/intrinsifier_ia32.cc

Index: runtime/vm/intrinsifier_ia32.cc
diff --git a/runtime/vm/intrinsifier_ia32.cc b/runtime/vm/intrinsifier_ia32.cc
index 130b5d69e9e2c3441c25e8adae9c51e9ac07131c..baab6995032ced2da0a9fa7bc2f4e697cea3d469 100644
--- a/runtime/vm/intrinsifier_ia32.cc
+++ b/runtime/vm/intrinsifier_ia32.cc
@@ -223,7 +223,7 @@ void Intrinsifier::GrowableArray_add(Assembler* assembler) {
   const intptr_t fixed_size = sizeof(Raw##type_name) + kObjectAlignment - 1;   \
   __ leal(EDI, Address(EDI, scale_factor, fixed_size));                        \
   __ andl(EDI, Immediate(-kObjectAlignment));                                  \
-  Heap::Space space = Heap::SpaceForAllocation(cid);                           \
+  Heap::Space space = Heap::kNew;                                              \
   __ movl(ECX, Address(THR, Thread::heap_offset()));                           \
   __ movl(EAX, Address(ECX, Heap::TopOffset(space)));                          \
   __ movl(EBX, EAX);                                                           \
@@ -1871,7 +1871,7 @@ static void TryAllocateOnebyteString(Assembler* assembler,
   __ andl(EDI, Immediate(-kObjectAlignment));
 
   const intptr_t cid = kOneByteStringCid;
-  Heap::Space space = Heap::SpaceForAllocation(cid);
+  Heap::Space space = Heap::kNew;
   __ movl(ECX, Address(THR, Thread::heap_offset()));
   __ movl(EAX, Address(ECX, Heap::TopOffset(space)));
   __ movl(EBX, EAX);