|  | // Copyright 2015 The Chromium Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #ifndef BASE_TEST_TEST_DISCARDABLE_MEMORY_ALLOCATOR_H_ | 
|  | #define BASE_TEST_TEST_DISCARDABLE_MEMORY_ALLOCATOR_H_ | 
|  |  | 
|  | #include <stddef.h> | 
|  |  | 
|  | #include "base/macros.h" | 
|  | #include "base/memory/discardable_memory_allocator.h" | 
|  |  | 
|  | namespace base { | 
|  |  | 
|  | // TestDiscardableMemoryAllocator is a simple DiscardableMemoryAllocator | 
|  | // implementation that can be used for testing. It allocates one-shot | 
|  | // DiscardableMemory instances backed by heap memory. | 
|  | class TestDiscardableMemoryAllocator : public DiscardableMemoryAllocator { | 
|  | public: | 
|  | constexpr TestDiscardableMemoryAllocator() = default; | 
|  |  | 
|  | // Overridden from DiscardableMemoryAllocator: | 
|  | std::unique_ptr<DiscardableMemory> AllocateLockedDiscardableMemory( | 
|  | size_t size) override; | 
|  |  | 
|  | private: | 
|  | DISALLOW_COPY_AND_ASSIGN(TestDiscardableMemoryAllocator); | 
|  | }; | 
|  |  | 
|  | }  // namespace base | 
|  |  | 
|  | #endif  // BASE_TEST_TEST_DISCARDABLE_MEMORY_ALLOCATOR_H_ |