Add support for collecting non-Chrome crash stats in Chrome OS

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
===================================================================
--- chrome/common/pref_names.cc	(revision 71358)
+++ chrome/common/pref_names.cc	(working copy)
@@ -749,6 +749,20 @@
 const char kStabilityChildProcessCrashCount[] =
     "user_experience_metrics.stability.child_process_crash_count";
 
+// On Chrome OS, total number of non-Chrome user process crashes
+// since the last report.
+const char kStabilityOtherUserCrashCount[] =
+    "user_experience_metrics.stability.other_user_crash_count";
+
+// On Chrome OS, total number of kernel crashes since the last report.
+const char kStabilityKernelCrashCount[] =
+    "user_experience_metrics.stability.kernel_crash_count";
+
+// On Chrome OS, total number of unclean system shutdowns since the
+// last report.
+const char kStabilitySystemUncleanShutdownCount[] =
+    "user_experience_metrics.stability.system_unclean_shutdowns";
+
 // Number of times the browser has been able to register crash reporting.
 const char kStabilityBreakpadRegistrationSuccess[] =
     "user_experience_metrics.stability.breakpad_registration_ok";