Adds UMA to measure when the data reduction proxy via header is missing

chrome/browser/net/chrome_network_delegate.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 "chrome/browser/net/chrome_network_delegate.h"
 
 #include <stdlib.h>
 
 #include <vector>
 
@@ skipping 564 matching lines @@
       int64 adjusted_original_content_length =
           data_reduction_proxy::GetAdjustedOriginalContentLength(
               request_type, original_content_length,
               received_content_length);
       AccumulateContentLength(received_content_length,
                               adjusted_original_content_length,
                               request_type);
       RecordContentLengthHistograms(received_content_length,
                                     original_content_length,
                                     freshness_lifetime);
+
       if (data_reduction_proxy_enabled_ &&
           data_reduction_proxy_usage_stats_ &&
           !proxy_config_getter_.is_null()) {
-        data_reduction_proxy_usage_stats_->RecordBypassedBytesHistograms(
-            *request,
+        data_reduction_proxy_usage_stats_->RecordBytesHistograms(
+            request,
             *data_reduction_proxy_enabled_,
             proxy_config_getter_.Run());
       }
       DVLOG(2) << __FUNCTION__
           << " received content length: " << received_content_length
           << " original content length: " << original_content_length
           << " url: " << request->url();
     }
 
     extensions_delegate_->OnCompleted(request, started);
@@ skipping 232 matching lines @@
   if (data_reduction_proxy_statistics_prefs_) {
     StoreAccumulatedContentLength(received_content_length,
                                   original_content_length,
                                   request_type,
                                   reinterpret_cast<Profile*>(profile_),
                                   data_reduction_proxy_statistics_prefs_);
   }
   received_content_length_ += received_content_length;
   original_content_length_ += original_content_length;
 }