Re-land: base: Implement browser process support for discardable memory.

base/memory/discardable_memory_unittest.cc

Index: base/memory/discardable_memory_unittest.cc
diff --git a/base/memory/discardable_memory_unittest.cc b/base/memory/discardable_memory_unittest.cc
deleted file mode 100644
index 60750746a4beb1b98488cd0347abd9b42009b90e..0000000000000000000000000000000000000000
--- a/base/memory/discardable_memory_unittest.cc
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright (c) 2013 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.
-
-#include "base/memory/discardable_memory.h"
-
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace base {
-namespace {
-
-const size_t kSize = 1024;
-
-// Test Lock() and Unlock() functionalities.
-TEST(DiscardableMemoryTest, LockAndUnLock) {
-  const scoped_ptr<DiscardableMemory> memory(
-      DiscardableMemory::CreateLockedMemory(kSize));
-  ASSERT_TRUE(memory);
-  void* addr = memory->Memory();
-  EXPECT_NE(nullptr, addr);
-  memory->Unlock();
-}
-
-// Test delete a discardable memory while it is locked.
-TEST(DiscardableMemoryTest, DeleteWhileLocked) {
-  const scoped_ptr<DiscardableMemory> memory(
-      DiscardableMemory::CreateLockedMemory(kSize));
-  ASSERT_TRUE(memory);
-}
-
-#if !defined(NDEBUG) && !defined(OS_ANDROID)
-// Death tests are not supported with Android APKs.
-TEST(DiscardableMemoryTest, UnlockedMemoryAccessCrashesInDebugMode) {
-  const scoped_ptr<DiscardableMemory> memory(
-      DiscardableMemory::CreateLockedMemory(kSize));
-  ASSERT_TRUE(memory);
-  memory->Unlock();
-  ASSERT_DEATH_IF_SUPPORTED(
-      { *static_cast<int*>(memory->Memory()) = 0xdeadbeef; }, ".*");
-}
-#endif
-
-// Test behavior when creating enough instances that could use up a 32-bit
-// address space.
-// This is disabled under AddressSanitizer on Windows as it crashes (by design)
-// on OOM. See http://llvm.org/PR22026 for the details.
-#if !defined(ADDRESS_SANITIZER) || !defined(OS_WIN)
-TEST(DiscardableMemoryTest, AddressSpace) {
-  const size_t kLargeSize = 4 * 1024 * 1024;  // 4MiB.
-  const size_t kNumberOfInstances = 1024 + 1;  // >4GiB total.
-
-  scoped_ptr<DiscardableMemory> instances[kNumberOfInstances];
-  for (auto& memory : instances) {
-    memory = DiscardableMemory::CreateLockedMemory(kLargeSize);
-    ASSERT_TRUE(memory);
-    void* addr = memory->Memory();
-    EXPECT_NE(nullptr, addr);
-    memory->Unlock();
-  }
-}
-#endif
-
-}  // namespace
-}  // namespace base