Move handling of invalid referrer to the network delegate

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>
 
 #include "base/base_paths.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
+#include "base/metrics/user_metrics.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_member.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/net/chrome_extensions_network_delegate.h"
@@ skipping 201 matching lines @@
 
 void RecordIOThreadToRequestStartOnUIThread(
     const base::TimeTicks& request_start) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   base::TimeDelta request_lag = request_start -
       g_browser_process->io_thread()->creation_time();
   UMA_HISTOGRAM_TIMES("Net.IOThreadCreationToHTTPRequestStart", request_lag);
 }
 #endif  // defined(OS_ANDROID)
 
+void ReportInvalidReferrerSend(const GURL& target_url,
+                               const GURL& referrer_url) {
+  base::RecordAction(
+      base::UserMetricsAction("Net.URLRequest_StartJob_InvalidReferrer"));
+}
+
 }  // namespace
 
 ChromeNetworkDelegate::ChromeNetworkDelegate(
     extensions::EventRouterForwarder* event_router,
     BooleanPrefMember* enable_referrers)
     : profile_(NULL),
       enable_referrers_(enable_referrers),
       enable_do_not_track_(NULL),
       force_google_safe_search_(NULL),
       data_reduction_proxy_enabled_(NULL),
@@ skipping 558 matching lines @@
     socket->net_log()->AddEvent(
         net::NetLog::TYPE_CHROME_POLICY_ABORTED_REQUEST,
         net::NetLog::StringCallback("url",
                                     &socket->url().possibly_invalid_spec()));
     return net::ERR_BLOCKED_BY_ADMINISTRATOR;
   }
 #endif
   return net::OK;
 }
 
+bool ChromeNetworkDelegate::OnCancelURLRequestWithPolicyViolatingReferrerHeader(
+    const net::URLRequest& request,
+    const GURL& target_url,
+    const GURL& referrer_url) const {
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+      base::Bind(&ReportInvalidReferrerSend, target_url, referrer_url));
+  return true;
+}
+
 void ChromeNetworkDelegate::AccumulateContentLength(
     int64 received_content_length,
     int64 original_content_length,
     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;
 }