SRTFetcher memory histograms should not use LinearHistogram.

chrome/browser/safe_browsing/srt_fetcher_win.cc

 // Copyright 2015 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/safe_browsing/srt_fetcher_win.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 342 matching lines @@
     // See UMA_HISTOGRAM_LONG_TIMES for the parameters to |FactoryTimeGet|.
     auto histogram = base::Histogram::FactoryTimeGet(
         FullName(name), base::TimeDelta::FromMilliseconds(1),
         base::TimeDelta::FromHours(1), 100, kUmaHistogramFlag);
     if (histogram)
       histogram->AddTime(sample);
   }
 
   void RecordMemoryKBHistogram(const std::string& name, Sample sample) const {
     // See UMA_HISTOGRAM_MEMORY_KB for the parameters to |FactoryGet|.
-    auto histogram = base::LinearHistogram::FactoryGet(
-        FullName(name), 1000, 500000, 50, kUmaHistogramFlag);
+    auto histogram = base::Histogram::FactoryGet(FullName(name), 1000, 500000,
+                                                 50, kUmaHistogramFlag);
     if (histogram)
       histogram->Add(sample);
   }
 
   void RecordSparseHistogram(const std::string& name, Sample sample) const {
     auto histogram =
         base::SparseHistogram::FactoryGet(FullName(name), kUmaHistogramFlag);
     if (histogram)
       histogram->Add(sample);
   }
@@ skipping 493 matching lines @@
                                     KEY_QUERY_VALUE);
 
   return srt_cleaner_key.Valid() && srt_cleaner_key.GetValueCount() > 0;
 }
 
 void SetSwReporterTestingDelegate(SwReporterTestingDelegate* delegate) {
   g_testing_delegate_ = delegate;
 }
 
 }  // namespace safe_browsing