Lands http://codereview.chromium.org/149404 for cmasone:

Adding a protobuf-based metrics communication scheme between Chrome OS and
Chrome.  Essentially, Chrome is used as a metrics upload service, and this hacks
in a simple IPC mechanism for Chrome OS to use to communicate metrics info to
Chrome for upload.  We eventually want to do this using protobuffers over DBus,
but this protobuffers-over-X-properties mechanism will work for now.

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/149459

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20539 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 28 insertions, 0 deletions

diff --git a/chrome/browser/metrics/system_metrics_logger.h b/chrome/browser/metrics/system_metrics_logger.h
new file mode 100644
index 0000000..83f94f6
--- /dev/null
+++ b/chrome/browser/metrics/system_metrics_logger.h
@@ -0,0 +1,28 @@
+// Copyright (c) 2009 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_METRICS_SYSTEM_METRICS_LOGGER_H_
+#define CHROME_BROWSER_METRICS_SYSTEM_METRICS_LOGGER_H_
+
+#include "base/basictypes.h"
+
+class Profile;
+
+// This is the abstract base class for a simple class that wraps up some
+// calls to chromium metrics logging helper functions.  This design will
+// allow for easy mocking in unit tests.
+
+class SystemMetricsLogger {
+ public:
+  SystemMetricsLogger() {}
+  virtual ~SystemMetricsLogger() {}
+  virtual void RecordOverviewKeystroke(Profile *profile) = 0;
+  virtual void RecordOverviewExitMouse(Profile *profile) = 0;
+  virtual void RecordOverviewExitKeystroke(Profile *profile) = 0;
+  virtual void RecordWindowCycleKeystroke(Profile *profile) = 0;
+  virtual void RecordBootTime(int64 time) = 0;
+  virtual void RecordUpTime(int64 time) = 0;
+};
+
+#endif  // CHROME_BROWSER_METRICS_SYSTEM_METRICS_LOGGER_H_