Task manager should support Idle Wakeups on Windows

chrome/browser/task_management/sampling/shared_sampler.cc

+// Copyright 2016 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/task_management/sampling/shared_sampler.h"
+
+#include "content/public/browser/browser_thread.h"
+
+namespace task_management {
+
+#if !defined(OS_WIN)

[ncarter (slow), 2016/07/28 21:37:26]

Could we make this file be shared_sampler_posix.cc and avoid this ifdef?

[stanisc, 2016/08/01 22:34:26]

Done.

+
+SharedSampler::SharedSampler(
+    const scoped_refptr<base::SequencedTaskRunner>& blocking_pool_runner) {}
+
+SharedSampler::~SharedSampler() {}
+
+int64_t SharedSampler::SupportsFlags() const {
+  return 0;
+}
+
+void SharedSampler::RegisterCallbacks(
+    base::ProcessId process_id,
+    const OnIdleWakeupsCallback& on_idle_wakeups) {}
+
+void SharedSampler::UnregisterCallbacks(base::ProcessId process_id) {}
+
+void SharedSampler::Refresh(base::ProcessId process_id,
+                             int64_t refresh_flags) {}
+
+#endif  // !defined(OS_WIN)
+
+}  // namespace task_management