[Password Manager] Add UMA stats to track interaction with synced accounts.

chrome/browser/password_manager/password_store_factory.cc

Index: chrome/browser/password_manager/password_store_factory.cc
diff --git a/chrome/browser/password_manager/password_store_factory.cc b/chrome/browser/password_manager/password_store_factory.cc
index 1db6e65eb69ae2b99b9cf7dbd9cfde47303793af..a21a56a5ab2f9a117c6f019b09a6b7dd04cfda35 100644
--- a/chrome/browser/password_manager/password_store_factory.cc
+++ b/chrome/browser/password_manager/password_store_factory.cc
@@ -7,6 +7,7 @@
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/prefs/pref_service.h"
+#include "chrome/browser/password_manager/sync_metrics.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/sync/glue/sync_start_util.h"
 #include "chrome/browser/webdata/web_data_service.h"
@@ -225,8 +226,14 @@ KeyedService* PasswordStoreFactory::BuildServiceInstanceFor(
 #else
   NOTIMPLEMENTED();
 #endif
+  password_manager::SyncState sync_state;
+  std::string sync_username;
+  password_manager_sync_metrics::GetSyncUsernameAndState(profile,
+                                                         &sync_username,
+                                                         &sync_state);
   if (!ps || !ps->Init(
-          sync_start_util::GetFlareForSyncableService(profile->GetPath()))) {
+          sync_start_util::GetFlareForSyncableService(profile->GetPath()),
+          sync_username, sync_state)) {
     NOTREACHED() << "Could not initialize password manager.";
     return NULL;
   }