Stop chrome from logging profile counts too many times at startup.

chrome/browser/profiles/gaia_info_update_service.cc

Index: chrome/browser/profiles/gaia_info_update_service.cc
diff --git a/chrome/browser/profiles/gaia_info_update_service.cc b/chrome/browser/profiles/gaia_info_update_service.cc
index eaf6c138707c0b05f95b6ed68401186b1f038201..5c55f51c25802a452628d85a23993e7b72681192 100644
--- a/chrome/browser/profiles/gaia_info_update_service.cc
+++ b/chrome/browser/profiles/gaia_info_update_service.cc
@@ -53,9 +53,6 @@ GAIAInfoUpdateService::~GAIAInfoUpdateService() {
 }
 
 void GAIAInfoUpdateService::Update() {
-  // UMA Profile Metrics should be logged regularly.
-  ProfileMetrics::LogNumberOfProfiles(g_browser_process->profile_manager());
-
   // The user must be logged in.
   SigninManagerBase* signin_manager =
       SigninManagerFactory::GetForProfile(profile_);
@@ -204,6 +201,14 @@ void GAIAInfoUpdateService::ScheduleNextUpdate() {
   else
     delta = desired_delta - update_delta;
 
+  // UMA Profile Metrics should be logged regularly.  Logging is not performed
+  // in Update() because it is a public method and may be called at any time.
+  // These metrics should logged only on this schedule.
+  //
+  // In mac perf tests, the browser process pointer may be null.
+  if (g_browser_process)
+    ProfileMetrics::LogNumberOfProfiles(g_browser_process->profile_manager());
+
   timer_.Start(FROM_HERE, delta, this, &GAIAInfoUpdateService::Update);
 }