metrics: Send ability to notify chrome of system crashes

metrics_library.h

Index: metrics_library.h
diff --git a/metrics_library.h b/metrics_library.h
index ed8386202b9280ca097179483900754a22d3e41d..3f860eb18e17eab194797785ae65cd6d7db05673 100644
--- a/metrics_library.h
+++ b/metrics_library.h
@@ -82,6 +82,10 @@ class MetricsLibrary : public MetricsLibraryInterface {
   // |action| is the user-generated event (e.g., "MuteKeyPressed").
   bool SendUserActionToUMA(const std::string& action);
 
+  // Sends a signal to UMA that a crash of the given |crash_kind|
+  // has occurred.  Used by UMA to generate stability statistics.
+  bool SendCrashToUMA(const char *crash_kind);
+
   // Sends to Autotest and returns true on success.
   static bool SendToAutotest(const std::string& name, int value);