Change the zone allocation api.

runtime/vm/bigint_operations_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 static uword ZoneAllocator(intptr_t size) {
   Zone* zone = Isolate::Current()->current_zone();
-  return zone->Allocate(size);
+  return zone->AllocUnsafe(size);
 }
 
 
 TEST_CASE(BigintSmi) {
   {
     const Smi& smi = Smi::Handle(Smi::New(5));
     const Bigint& bigint = Bigint::Handle(BigintOperations::NewFromSmi(smi));
     EXPECT(BigintOperations::FitsIntoSmi(bigint));
     const Smi& smi_back = Smi::Handle(BigintOperations::ToSmi(bigint));
     EXPECT_EQ(5, smi_back.Value());
@@ skipping 2199 matching lines @@
       "123456789012345678901234567890123456789012345678901234567890123456789012"
       "345678901234567890123456789012345678901234567890123456789012345678901234"
       "567890123456789012345678901234567890123456789012345678901234567890123456"
       "789012345678901234567890123456789012345678901234567890123456789012345678"
       "90123456789012345678901234567890",
       "0x1234567890ABCDEF01234567890ABCDEF01234567890ABCDEF01234567890ABCDEF"
       "01234567890ABCDEE");
 }
 
 }  // namespace dart