password_manager bad_message.h: Use a sparse histogram.

components/password_manager/content/browser/bad_message.cc

Index: components/password_manager/content/browser/bad_message.cc
diff --git a/components/password_manager/content/browser/bad_message.cc b/components/password_manager/content/browser/bad_message.cc
index b1525566e072a24ef5a02df87dd2820c84d92a53..74c35273571a7693b000d21a53acbfecddb578dc 100644
--- a/components/password_manager/content/browser/bad_message.cc
+++ b/components/password_manager/content/browser/bad_message.cc
@@ -5,7 +5,7 @@
 #include "components/password_manager/content/browser/bad_message.h"
 
 #include "base/logging.h"
-#include "base/metrics/histogram_macros.h"
+#include "base/metrics/sparse_histogram.h"
 #include "content/public/browser/render_process_host.h"
 
 namespace password_manager {
@@ -16,10 +16,8 @@ void ReceivedBadMessage(content::RenderProcessHost* host,
   LOG(ERROR)
       << "Terminating renderer for bad PasswordManager IPC message, reason "
       << static_cast<int>(reason);
-  UMA_HISTOGRAM_ENUMERATION(
-      "Stability.BadMessageTerminated.PasswordManager",
-      static_cast<int>(reason),
-      static_cast<int>(BadMessageReason::BAD_MESSAGE_MAX));
+  UMA_HISTOGRAM_SPARSE_SLOWLY("Stability.BadMessageTerminated.PasswordManager",
+                              static_cast<int>(reason));
   host->ShutdownForBadMessage();
 }