Revert of Make task manager memory data more efficient and meaningful.

chrome/browser/private_working_set_snapshot_win_unittest.cc

Index: chrome/browser/private_working_set_snapshot_win_unittest.cc
diff --git a/chrome/browser/private_working_set_snapshot_win_unittest.cc b/chrome/browser/private_working_set_snapshot_win_unittest.cc
deleted file mode 100644
index f77f03499878c1d1f1d1ca9e2be29fc7a076e163..0000000000000000000000000000000000000000
--- a/chrome/browser/private_working_set_snapshot_win_unittest.cc
+++ /dev/null
@@ -1,52 +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.
-
-#include "chrome/browser/private_working_set_snapshot.h"
-
-#include "base/win/windows_version.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using PrivateWorkingSetSnapshotWinTest = testing::Test;
-
-TEST_F(PrivateWorkingSetSnapshotWinTest, FindPidSelfTest) {
-  // The Pdh APIs are supported on Windows XP, but the "Working Set - Private"
-  // counter that PrivateWorkingSetSnapshot depends on is not defined until
-  // Windows Vista. Early-out to avoid test failure.
-  if (base::win::GetVersion() < base::win::VERSION_VISTA)
-    return;
-
-  // Sample this process.
-  base::ProcessId pid = base::GetCurrentProcId();
-
-  PrivateWorkingSetSnapshot private_ws_snapshot;
-
-  private_ws_snapshot.AddToMonitorList("unit_tests");
-  private_ws_snapshot.Sample();
-
-  size_t private_ws = private_ws_snapshot.GetPrivateWorkingSet(pid);
-  // Private working set is difficult to predict but should be at least several
-  // MB. Initial tests show a value of 19+ MB depending on how many tests and
-  // processes are used. Anomalously small or large values would warrant
-  // investigation.
-  EXPECT_GT(private_ws, 2000000u);
-  // Check that the WS is less than 500 MB. This is set very high to reduce the
-  // chance that unrelated changes could ever make this fail. This mostly just
-  // checks against some uncaught error that might return 0xFFFFFFFF.
-  EXPECT_LT(private_ws, 500000000u);
-
-  // Allocate and touch a large block of memory (vector's constructor will zero
-  // every entry). This will increase the private working set.
-  const size_t alloc_size = 10000000;
-  std::vector<char> big_memory(alloc_size);
-
-  size_t private_ws2 = private_ws_snapshot.GetPrivateWorkingSet(pid);
-  EXPECT_EQ(private_ws, private_ws2) << "GetPrivateWorkingSet should be "
-                                        "consistent until the next call to "
-                                        "Sample()";
-
-  private_ws_snapshot.Sample();
-  size_t private_ws3 = private_ws_snapshot.GetPrivateWorkingSet(pid);
-  EXPECT_GT(private_ws3, private_ws2 + alloc_size / 2)
-      << "GetPrivateWorkingSet should increase as we allocate more memory";
-}