Fix overflow when logging MaxInt32 to a sparse histogram.

components/translate/core/common/translate_metrics_unittest.cc

 // Copyright 2014 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 "components/translate/core/common/translate_metrics.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/metrics/histogram.h"
@@ skipping 91 matching lines @@
     Snapshot();
     EXPECT_EQ(count, GetTotalCount());
   }
 
   void CheckValueInLogs(double value) {
     Snapshot();
     ASSERT_TRUE(samples_.get());
     for (std::unique_ptr<SampleCountIterator> i = samples_->Iterator();
          !i->Done(); i->Next()) {
       HistogramBase::Sample min;
-      HistogramBase::Sample max;
+      int64_t max;
       HistogramBase::Count count;
       i->Get(&min, &max, &count);
       if (min <= value && value <= max && count >= 1)
         return;
     }
     EXPECT_FALSE(true);
   }
 
   HistogramBase::Count GetCount(HistogramBase::Sample value) {
     Snapshot();
@@ skipping 187 matching lines @@
   EXPECT_EQ(recorder.GetCount(base::HashMetricName("en-AU,ru-Latn")), 1);
 
   // We don't track "en-XX" or "en-YY" as page codes.
   translate::ReportLanguageDetectionConflict("en-XX", "es");
   translate::ReportLanguageDetectionConflict("en-YY", "es");
   recorder.CheckTotalCount(5);
   EXPECT_EQ(recorder.GetCount(base::HashMetricName("other,es")), 2);
 }
 
 }  // namespace translate