Added Protector backup for Preferences.

chrome/browser/protector/histograms.cc

 // Copyright (c) 2012 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/protector/histograms.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/search_engines/search_engine_type.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_prepopulate_data.h"
 
 namespace protector {
 
 const char kProtectorHistogramDefaultSearchProvider[] =
     "Protector.DefaultSearchProvider";
 
+const char kProtectorHistogramPrefs[] =
+    "Protector.Preferences";
+
 const char kProtectorHistogramSearchProviderApplied[] =
     "Protector.SearchProvider.Applied";
 const char kProtectorHistogramSearchProviderCorrupt[] =
     "Protector.SearchProvider.Corrupt";
 const char kProtectorHistogramSearchProviderDiscarded[] =
     "Protector.SearchProvider.Discarded";
 const char kProtectorHistogramSearchProviderFallback[] =
     "Protector.SearchProvider.Fallback";
 const char kProtectorHistogramSearchProviderHijacked[] =
     "Protector.SearchProvider.Hijacked";
@@ skipping 21 matching lines @@
   scoped_ptr<TemplateURL> prepopulated_url(
       TemplateURLPrepopulateData::FindPrepopulatedEngine(turl->url()->url()));
   if (prepopulated_url.get())
     return static_cast<int>(prepopulated_url->search_engine_type());
   // If |turl| is not among the prepopulated providers, return
   // SEARCH_ENGINE_OTHER as well.
   return SEARCH_ENGINE_OTHER;
 }
 
 }  // namespace protector