Move the crash metrics to the crash reproting lib to avoid a back dependency ...

chrome_frame/crash_metrics.h

-// Copyright (c) 2010 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.
-
-// This file defines a service that collects information about the user
-// experience in order to help improve future versions of the app.
-
-#ifndef CHROME_FRAME_CRASH_METRICS_H_
-#define CHROME_FRAME_CRASH_METRICS_H_
-
-#include "base/basictypes.h"
-#include "base/lazy_instance.h"
-#include "base/thread_local.h"
-
-// This class provides functionality to track counters like successful page
-// loads in the host browser, total number of crashes, page loads in chrome
-// frame.
-class CrashMetricsReporter {
- public:
-  enum Metric {
-    NAVIGATION_COUNT,
-    CRASH_COUNT,
-    CHROME_FRAME_NAVIGATION_COUNT,
-    SESSION_ID,
-    LAST_METRIC,
-  };
-  // Returns the global instance of this class.
-  static CrashMetricsReporter* GetInstance();
-
-  // The following function pair return/set/increment the specified user
-  // metrics value from the registry. These values are set under the
-  // following key:-
-  // HKCU\Software\\Google\\ChromeFrame\\UserMetrics
-  int GetMetric(Metric metric);
-  bool SetMetric(Metric metric, int value);
-  int IncrementMetric(Metric metric);
-
-  // Records the crash metrics counters like navigation count, crash count.
-  void RecordCrashMetrics();
-
-  bool active() const {
-    return active_;
-  }
-
-  void set_active(bool active) {
-    active_ = active;
-  }
-
- private:
-  friend struct base::DefaultLazyInstanceTraits<CrashMetricsReporter>;
-
-  CrashMetricsReporter()
-      : active_(false) {}
-  virtual ~CrashMetricsReporter() {}
-
-  // Indicates whether the crash metrics reporter instance is active.
-  bool active_;
-
-  static wchar_t* g_metric_names[LAST_METRIC];
-
-  DISALLOW_COPY_AND_ASSIGN(CrashMetricsReporter);
-};
-
-#endif  // CHROME_FRAME_CRASH_METRICS_H_
-