Stack sampling profiler: move configuration to chrome/common

chrome/browser/stack_sampling_configuration.h

-// 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 CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_
-#define CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_
-
-#include "base/macros.h"
-#include "base/profiler/stack_sampling_profiler.h"
-
-// Chooses a configuration for the stack sampling profiler for browser process
-// startup. This must live outside of ChromeBrowserMainParts so it can be
-// friended by ChromeMetricsServiceAccessor.
-class StackSamplingConfiguration {
- public:
-  StackSamplingConfiguration();
-
-  // Get the stack sampling params to use for this session.
-  base::StackSamplingProfiler::SamplingParams GetSamplingParams() const;
-
-  // Returns true if the profiler should be started at all.
-  bool IsProfilerEnabled() const;
-
-  // Register the chosen configuration as a synthetic field trial.
-  void RegisterSyntheticFieldTrial() const;
-
- private:
-  enum ProfileConfiguration {
-    PROFILE_DISABLED,
-    PROFILE_CONTROL,
-    PROFILE_NO_SAMPLES,  // Run the profiler thread, but don't collect profiles.
-    PROFILE_5HZ,
-    PROFILE_10HZ,
-    PROFILE_100HZ
-  };
-
-  static ProfileConfiguration GenerateConfiguration();
-
-  const ProfileConfiguration configuration_;
-
-  DISALLOW_COPY_AND_ASSIGN(StackSamplingConfiguration);
-};
-
-#endif  // CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_