Use stricter type checking in UMA_HISTOGRAM_ENUMERATION

components/policy/core/common/cloud/device_management_service.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 "components/policy/core/common/cloud/device_management_service.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 282 matching lines @@
     return;
   }
 
   if (response_code != kSuccess) {
     UMA_HISTOGRAM_ENUMERATION("Enterprise.DMServerRequestSuccess",
                               DMServerRequestSuccess::REQUEST_ERROR,
                               DMServerRequestSuccess::REQUEST_MAX);
     LOG(WARNING) << "DMServer sent an error response: " << response_code;
   } else {
     // Success with retries_count_ retries.
-    UMA_HISTOGRAM_ENUMERATION("Enterprise.DMServerRequestSuccess",
-                              retries_count_,
-                              DMServerRequestSuccess::REQUEST_MAX);
+    UMA_HISTOGRAM_EXACT_LINEAR(
+        "Enterprise.DMServerRequestSuccess", retries_count_,
+        static_cast<int>(DMServerRequestSuccess::REQUEST_MAX));
   }
 
   switch (response_code) {
     case kSuccess: {
       em::DeviceManagementResponse response;
       if (!response.ParseFromString(data)) {
         ReportError(DM_STATUS_RESPONSE_DECODING_ERROR);
         return;
       }
       callback_.Run(DM_STATUS_SUCCESS, net::OK, response);
@@ skipping 390 matching lines @@
     }
   }
 
   const JobQueue::iterator elem =
       std::find(queued_jobs_.begin(), queued_jobs_.end(), job);
   if (elem != queued_jobs_.end())
     queued_jobs_.erase(elem);
 }
 
 }  // namespace policy