Use stricter type checking in UMA_HISTOGRAM_ENUMERATION

components/search_provider_logos/logo_tracker.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/search_provider_logos/logo_tracker.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 128 matching lines @@
         FROM_HERE, base::Bind(&DeleteLogoCacheOnFileThread, logo_cache_));
   logo_cache_ = cache.release();
 }
 
 void LogoTracker::SetClockForTests(std::unique_ptr<base::Clock> clock) {
   clock_ = std::move(clock);
 }
 
 void LogoTracker::ReturnToIdle(int outcome) {
   if (outcome != kDownloadOutcomeNotTracked) {
-    UMA_HISTOGRAM_ENUMERATION("NewTabPage.LogoDownloadOutcome", outcome,
+    UMA_HISTOGRAM_ENUMERATION("NewTabPage.LogoDownloadOutcome",
+                              static_cast<LogoDownloadOutcome>(outcome),
                               DOWNLOAD_OUTCOME_COUNT);
   }
   // Cancel the current asynchronous operation, if any.
   fetcher_.reset();
   weak_ptr_factory_.InvalidateWeakPtrs();
 
   // Reset state.
   is_idle_ = true;
   cached_logo_.reset();
   is_cached_logo_valid_ = false;
@@ skipping 220 matching lines @@
                                              int64_t current,
                                              int64_t total,
                                              int64_t current_network_bytes) {
   if (total > kMaxDownloadBytes || current > kMaxDownloadBytes) {
     LOG(WARNING) << "Search provider logo exceeded download size limit";
     ReturnToIdle(DOWNLOAD_OUTCOME_DOWNLOAD_FAILED);
   }
 }
 
 }  // namespace search_provider_logos