[heap] Simplify and scale ResourceConstraints::ConfigureDefaults.

test/unittests/zone/segmentpool-unittest.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/zone/accounting-allocator.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace v8 {
 namespace internal {
 
 TEST(Zone, SegmentPoolConstraints) {
   size_t sizes[]{
       0,  // Corner case
-      AccountingAllocator::kMaxPoolSizeLowMemoryDevice,
-      AccountingAllocator::kMaxPoolSizeMediumMemoryDevice,
-      AccountingAllocator::kMaxPoolSizeHighMemoryDevice,
-      AccountingAllocator::kMaxPoolSizeHugeMemoryDevice,
+      AccountingAllocator::kMaxPoolSize,
       GB  // Something really large
   };
 
   AccountingAllocator allocator;
   for (size_t size : sizes) {
     allocator.ConfigureSegmentPool(size);
     size_t total_size = 0;
     for (size_t power = 0; power < AccountingAllocator::kNumberBuckets;
          ++power) {
       total_size +=
           allocator.unused_segments_max_sizes_[power] * (size_t(1) << power);
     }
     EXPECT_LE(total_size, size);
   }
 }
 
 }  // namespace internal
 }  // namespace v8