Add FirstRun.SearchEngineBubble UMA histogram counts.

chrome/browser/first_run/first_run.cc

Index: chrome/browser/first_run/first_run.cc
diff --git a/chrome/browser/first_run/first_run.cc b/chrome/browser/first_run/first_run.cc
index 2c267c0b8514c9c21ee5281f907db35eac94fb06..17938460ffdb5777494deca6a95a01fe25a6c5f9 100644
--- a/chrome/browser/first_run/first_run.cc
+++ b/chrome/browser/first_run/first_run.cc
@@ -7,6 +7,7 @@
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
+#include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
@@ -462,6 +463,11 @@ bool SetPersonalDataManagerFirstRunPref() {
   return true;
 }
 
+void LogFirstRunMetric(FirstRunBubbleMetric metric) {
+  UMA_HISTOGRAM_ENUMERATION("FirstRun.SearchEngineBubble", metric,
+                            NUM_FIRST_RUN_BUBBLE_METRICS);
+}
+
 // static
 void FirstRunBubbleLauncher::ShowFirstRunBubbleSoon() {
   SetShowFirstRunBubblePref(true);