[heap] Simplify and scale ResourceConstraints::ConfigureDefaults.

src/zone/accounting-allocator.h

Index: src/zone/accounting-allocator.h
diff --git a/src/zone/accounting-allocator.h b/src/zone/accounting-allocator.h
index 65128c6f7052aaeb2af51201b1efb3a0936210c8..53d30b38269972bcea75e0b22882b875324f490f 100644
--- a/src/zone/accounting-allocator.h
+++ b/src/zone/accounting-allocator.h
@@ -20,10 +20,7 @@ namespace internal {
 
 class V8_EXPORT_PRIVATE AccountingAllocator {
  public:
-  static const size_t kMaxPoolSizeLowMemoryDevice = 8ul * KB;
-  static const size_t kMaxPoolSizeMediumMemoryDevice = 8ul * KB;
-  static const size_t kMaxPoolSizeHighMemoryDevice = 8ul * KB;
-  static const size_t kMaxPoolSizeHugeMemoryDevice = 8ul * KB;
+  static const size_t kMaxPoolSize = 8ul * KB;
 
   AccountingAllocator();
   virtual ~AccountingAllocator();