Use factory to create histograms, and refcounts to track lifetimes...

chrome/browser/ssl/ssl_blocking_page.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ssl/ssl_blocking_page.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/histogram.h"
 #include "base/string_piece.h"
@@ skipping 16 matching lines @@
 
 namespace {
 
 enum SSLBlockingPageEvent {
   SHOW,
   PROCEED,
   DONT_PROCEED,
 };
 
 void RecordSSLBlockingPageStats(SSLBlockingPageEvent event) {
-  static LinearHistogram histogram("interstial.ssl", 0, 2, 3);
-  histogram.SetFlags(kUmaTargetedHistogramFlag);
-  histogram.Add(event);
+  static scoped_refptr<Histogram> histogram =
+      LinearHistogram::LinearHistogramFactoryGet(
+          "interstial.ssl", 1, 2, 3);
+  histogram->SetFlags(kUmaTargetedHistogramFlag);
+  histogram->Add(event);
 }
 
 }  // namespace
 
 // Note that we always create a navigation entry with SSL errors.
 // No error happening loading a sub-resource triggers an interstitial so far.
 SSLBlockingPage::SSLBlockingPage(SSLCertErrorHandler* handler,
                                  Delegate* delegate)
     : InterstitialPage(handler->GetTabContents(), true, handler->request_url()),
       handler_(handler),
@@ skipping 102 matching lines @@
       L"moreInfo1", L"moreInfo2", L"moreInfo3", L"moreInfo4", L"moreInfo5"
   };
   int i;
   for (i = 0; i < static_cast<int>(extra_info.size()); i++) {
     strings->SetString(keys[i], extra_info[i]);
   }
   for (;i < 5; i++) {
     strings->SetString(keys[i], L"");
   }
 }