Use stricter type checking in UMA_HISTOGRAM_ENUMERATION

content/browser/download/download_item_impl.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.
 
 // File method ordering: Methods in this file are in the same order as
 // in download_item_impl.h, with the following exception: The public
 // interface Start is placed in chronological order with the other
 // (private) routines that together define a DownloadItem's state
 // transitions as the download progresses.  See "Download progression
 // cascade" later in this file.
@@ skipping 1098 matching lines @@
   if (chain_iter != new_create_info.url_chain.end())
     origin_state |= ORIGIN_STATE_ON_RESUMPTION_ADDITIONAL_REDIRECTS;
   if (etag_ != new_create_info.etag ||
       last_modified_time_ != new_create_info.last_modified) {
     received_slices_.clear();
     destination_info_.received_bytes = 0;
     origin_state |= ORIGIN_STATE_ON_RESUMPTION_VALIDATORS_CHANGED;
   }
   if (content_disposition_ != new_create_info.content_disposition)
     origin_state |= ORIGIN_STATE_ON_RESUMPTION_CONTENT_DISPOSITION_CHANGED;
-  RecordOriginStateOnResumption(is_partial, origin_state);
+  RecordOriginStateOnResumption(
+      is_partial, static_cast<OriginStateOnResumption>(origin_state));
 
   request_info_.url_chain.insert(request_info_.url_chain.end(), chain_iter,
                                  new_create_info.url_chain.end());
   etag_ = new_create_info.etag;
   last_modified_time_ = new_create_info.last_modified;
   response_headers_ = new_create_info.response_headers;
   content_disposition_ = new_create_info.content_disposition;
   // It is possible that the previous download attempt failed right before the
   // response is received. Need to reset the MIME type.
   mime_type_ = new_create_info.mime_type;
@@ skipping 1240 matching lines @@
     case RESUME_MODE_USER_CONTINUE:
       return "USER_CONTINUE";
     case RESUME_MODE_USER_RESTART:
       return "USER_RESTART";
   }
   NOTREACHED() << "Unknown resume mode " << mode;
   return "unknown";
 }
 
 }  // namespace content