1 files changed, 65 insertions, 0 deletions
diff --git a/chrome_frame/crash_metrics.h b/chrome_frame/crash_metrics.h
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+++ b/chrome_frame/crash_metrics.h
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+// 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_
+