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-rw-r--r--chrome/common/pref_names.cc5
-rw-r--r--chrome/common/pref_names.h1
2 files changed, 6 insertions, 0 deletions
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 3213362..bda65f9 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -283,6 +283,11 @@ const wchar_t kProfilePrefix[] = L"profile-";
const wchar_t kStabilityExitedCleanly[] =
L"user_experience_metrics.stability.exited_cleanly";
+// Version string of previous run, which is used to assure that stability
+// metrics reported under current version reflect stability of the same version.
+const wchar_t kStabilityStatsVersion[] =
+ L"user_experience_metrics.stability.stats_version";
+
// False if we received a session end and either we crashed during processing
// the session end or ran out of time and windows terminated us.
const wchar_t kStabilitySessionEndCompleted[] =
diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
index dd5e35d..49367fd 100644
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -97,6 +97,7 @@ extern const wchar_t kProfileMetrics[];
extern const wchar_t kProfilePrefix[];
extern const wchar_t kStabilityExitedCleanly[];
+extern const wchar_t kStabilityStatsVersion[];
extern const wchar_t kStabilitySessionEndCompleted[];
extern const wchar_t kStabilityLaunchCount[];
extern const wchar_t kStabilityCrashCount[];