base: Rename discardable memory allocator interface and remove unnecessary class.

base/test/test_discardable_memory_shmem_allocator.h

Index: base/test/test_discardable_memory_shmem_allocator.h
diff --git a/base/test/test_discardable_memory_shmem_allocator.h b/base/test/test_discardable_memory_shmem_allocator.h
deleted file mode 100644
index a40960e64b3d06990e4858c9d5904c699799c6eb..0000000000000000000000000000000000000000
--- a/base/test/test_discardable_memory_shmem_allocator.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// 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_SHMEM_ALLOCATOR_H_
-#define BASE_TEST_TEST_DISCARDABLE_MEMORY_SHMEM_ALLOCATOR_H_
-
-#include "base/memory/discardable_memory_shmem_allocator.h"
-
-namespace base {
-
-class TestDiscardableMemoryShmemAllocator
-    : public DiscardableMemoryShmemAllocator {
- public:
-  TestDiscardableMemoryShmemAllocator();
-  ~TestDiscardableMemoryShmemAllocator() override;
-
-  // Overridden from DiscardableMemoryShmemAllocator:
-  scoped_ptr<DiscardableMemoryShmemChunk> AllocateLockedDiscardableMemory(
-      size_t size) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestDiscardableMemoryShmemAllocator);
-};
-
-}  // namespace base
-
-#endif  // BASE_TEST_TEST_DISCARDABLE_MEMORY_SHMEM_ALLOCATOR_H_