Trigger data reduction proxy unreachable message via on proxy fall back.

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 426 matching lines @@
     on_resolve_proxy_handler_.Run(url, load_flags,
                                   proxy_config_getter_.Run(),
                                   proxy_service.proxy_retry_info(),
                                   data_reduction_proxy_params_, result);
   }
 }
 
 void ChromeNetworkDelegate::OnProxyFallback(const net::ProxyServer& bad_proxy,
                                             int net_error) {
   if (data_reduction_proxy_usage_stats_) {
-    data_reduction_proxy_usage_stats_->RecordBypassEventHistograms(
+    data_reduction_proxy_usage_stats_->OnProxyFallback(
         bad_proxy, net_error);
   }
 }
 
 int ChromeNetworkDelegate::OnBeforeSendHeaders(
     net::URLRequest* request,
     const net::CompletionCallback& callback,
     net::HttpRequestHeaders* headers) {
   bool force_safe_search = force_google_safe_search_ &&
                            force_google_safe_search_->GetValue();
@@ skipping 359 matching lines @@
     data_reduction_proxy::DataReductionProxyRequestType request_type) {
   DCHECK_GE(received_content_length, 0);
   DCHECK_GE(original_content_length, 0);
   StoreAccumulatedContentLength(received_content_length,
                                 original_content_length,
                                 request_type,
                                 reinterpret_cast<Profile*>(profile_));
   received_content_length_ += received_content_length;
   original_content_length_ += original_content_length;
 }