Use filter context to track stats better in SDCH filtering

chrome/browser/automation/url_request_slow_download_job.cc

 // Copyright (c) 2006-2008 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/automation/url_request_slow_download_job.h"
 
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "googleurl/src/gurl.h"
 #include "net/http/http_response_headers.h"
@@ skipping 120 matching lines @@
   }
 }
 
 // Public virtual version.
 void URLRequestSlowDownloadJob::GetResponseInfo(net::HttpResponseInfo* info) {
   // Forward to private const version.
   GetResponseInfoConst(info);
 }
 
 // Private const version.
-void URLRequestSlowDownloadJob::GetResponseInfoConst(net::HttpResponseInfo* info) const {
+void URLRequestSlowDownloadJob::GetResponseInfoConst(
+    net::HttpResponseInfo* info) const {
   // Send back mock headers.
   std::string raw_headers;
   if (LowerCaseEqualsASCII(kFinishDownloadUrl,
                            request_->url().spec().c_str())) {
     raw_headers.append(
       "HTTP/1.1 200 OK\n"
       "Content-type: text/plain\n");
   } else {
     raw_headers.append(
       "HTTP/1.1 200 OK\n"
       "Content-type: application/octet-stream\n"
       "Cache-Control: max-age=0\n");
 
     if (LowerCaseEqualsASCII(kKnownSizeUrl, request_->url().spec().c_str())) {
       raw_headers.append(StringPrintf("Content-Length: %d\n",
           kFirstDownloadSize + kSecondDownloadSize));
     }
   }
 
   // ParseRawHeaders expects \0 to end each header line.
   ReplaceSubstringsAfterOffset(&raw_headers, 0, "\n", std::string("\0", 1));
   info->headers = new net::HttpResponseHeaders(raw_headers);
 }
 
 bool URLRequestSlowDownloadJob::GetMimeType(std::string* mime_type) const {
   net::HttpResponseInfo info;
   GetResponseInfoConst(&info);
   return info.headers && info.headers->GetMimeType(mime_type);
 }