Task manager should support Idle Wakeups on Windows

chrome/browser/ui/task_manager/task_manager_columns.cc

 // 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/ui/task_manager/task_manager_columns.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/grit/generated_resources.h"
@@ skipping 53 matching lines @@
     arraysize("800 kB") * kCharWidth, -1, true, false, false },
 
 #if !defined(DISABLE_NACL)
   { IDS_TASK_MANAGER_NACL_DEBUG_STUB_PORT_COLUMN, ui::TableColumn::RIGHT, -1, 0,
     arraysize("32767") * kCharWidth, -1, true, true, false },
 #endif  // !defined(DISABLE_NACL)
 
   { IDS_TASK_MANAGER_JAVASCRIPT_MEMORY_ALLOCATED_COLUMN, ui::TableColumn::RIGHT,
     -1, 0, arraysize("2000.0K (2000.0 live)") * kCharWidth, -1, true, false,
     false },
-
-#if defined(OS_MACOSX) || defined(OS_LINUX)
-  // TODO(port): Port the idle wakeups per second to platforms other than Linux
-  // and MacOS (http://crbug.com/120488).

[brucedawson, 2016/08/03 00:36:55]

I think the #if needs to be retained, just modified, due to OS_ANDROID,
OS_CHROMEOS, etc.

[stanisc, 2016/08/03 01:39:43]

Initially I retained this #if but Nick commented that it was no longer
necessary. As I understand this code doesn't compile for Android and Chrome OS
is covered by OS_LINUX. In fact Idle Wakeups column does show on my ChromeBook.

   { IDS_TASK_MANAGER_IDLE_WAKEUPS_COLUMN, ui::TableColumn::RIGHT, -1, 0,
     arraysize("idlewakeups") * kCharWidth, -1, true, false, false },
-#endif  // defined(OS_MACOSX) || defined(OS_LINUX)
 
 #if defined(OS_LINUX)
   { IDS_TASK_MANAGER_OPEN_FD_COUNT_COLUMN, ui::TableColumn::RIGHT, -1, 0,
     arraysize("999") * kCharWidth, -1, true, false, false },
 #endif  // defined(OS_LINUX)
   { IDS_TASK_MANAGER_PROCESS_PRIORITY_COLUMN, ui::TableColumn::LEFT, -1, 0,
     arraysize("background") * kCharWidth, -1, true, true, false },
 };
 
 const size_t kColumnsSize = arraysize(kColumns);
@@ skipping 38 matching lines @@
   switch (column_id) {
     COLUMNS_LITS(COLUMN_ID_AS_STRING)
     default:
       NOTREACHED();
       return std::string();
   }
 }
 
 
 }  // namespace task_management