Use a monotonic clock (TimeTicks) to report network times to WebCore.

content/browser/renderer_host/async_resource_handler.cc

 // Copyright (c) 2011 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 "content/browser/renderer_host/async_resource_handler.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/hash_tables.h"
 #include "base/logging.h"
 #include "base/shared_memory.h"
 #include "content/browser/debugger/devtools_netlog_observer.h"
 #include "content/browser/host_zoom_map.h"
 #include "content/browser/renderer_host/global_request_id.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 #include "content/browser/renderer_host/resource_dispatcher_host_request_info.h"
 #include "content/browser/renderer_host/resource_message_filter.h"
 #include "content/browser/resource_context.h"
 #include "content/common/resource_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/resource_dispatcher_host_delegate.h"
 #include "content/public/common/resource_response.h"
 #include "net/base/io_buffer.h"
 #include "net/base/load_flags.h"
 #include "net/base/net_log.h"
 #include "webkit/glue/resource_loader_bridge.h"
 
-using base::Time;
 using base::TimeTicks;
 
 namespace {
 
 // When reading, we don't know if we are going to get EOF (0 bytes read), so
 // we typically have a buffer that we allocated but did not use.  We keep
 // this buffer around for the next read as a small optimization.
 SharedIOBuffer* g_spare_read_buffer = NULL;
 
 // The initial size of the shared memory buffer. (32 kilobytes).
@@ skipping 63 matching lines @@
     const GURL& new_url,
     content::ResourceResponse* response,
     bool* defer) {
   *defer = true;
   net::URLRequest* request = rdh_->GetURLRequest(
       GlobalRequestID(filter_->child_id(), request_id));
   if (rdh_->delegate())
     rdh_->delegate()->OnRequestRedirected(request, response, filter_);
 
   DevToolsNetLogObserver::PopulateResponseInfo(request, response);
+  response->request_start = request->creation_time();
+  response->response_start = TimeTicks::Now();
   return filter_->Send(new ResourceMsg_ReceivedRedirect(
       routing_id_, request_id, new_url, *response));
 }
 
 bool AsyncResourceHandler::OnResponseStarted(
     int request_id,
     content::ResourceResponse* response) {
   // For changes to the main frame, inform the renderer of the new URL's
   // per-host settings before the request actually commits.  This way the
   // renderer will be able to set these precisely at the time the
@@ skipping 13 matching lines @@
 
   ResourceDispatcherHostRequestInfo* info = rdh_->InfoForRequest(request);
   if (info->resource_type() == ResourceType::MAIN_FRAME && host_zoom_map) {
     GURL request_url(request->url());
     filter_->Send(new ViewMsg_SetZoomLevelForLoadingURL(
         info->route_id(),
         request_url, host_zoom_map->GetZoomLevel(net::GetHostOrSpecFromURL(
             request_url))));
   }
 
+  response->request_start = request->creation_time();
+  response->response_start = TimeTicks::Now();
   filter_->Send(new ResourceMsg_ReceivedResponse(
       routing_id_, request_id, *response));
 
   if (request->response_info().metadata) {
     std::vector<char> copy(request->response_info().metadata->data(),
                            request->response_info().metadata->data() +
                            request->response_info().metadata->size());
     filter_->Send(new ResourceMsg_ReceivedCachedMetadata(
         routing_id_, request_id, copy));
   }
@@ skipping 78 matching lines @@
 void AsyncResourceHandler::OnDataDownloaded(
     int request_id, int bytes_downloaded) {
   filter_->Send(new ResourceMsg_DataDownloaded(
       routing_id_, request_id, bytes_downloaded));
 }
 
 bool AsyncResourceHandler::OnResponseCompleted(
     int request_id,
     const net::URLRequestStatus& status,
     const std::string& security_info) {
-  Time completion_time = Time::Now();
+  TimeTicks completion_time = TimeTicks::Now();
   filter_->Send(new ResourceMsg_RequestComplete(routing_id_,
                                                 request_id,
                                                 status,
                                                 security_info,
                                                 completion_time));
 
   // If we still have a read buffer, then see about caching it for later...
   // Note that we have to make sure the buffer is not still being used, so we
   // have to perform an explicit check on the status code.
   if (g_spare_read_buffer ||
@@ skipping 11 matching lines @@
 
 // static
 void AsyncResourceHandler::GlobalCleanup() {
   if (g_spare_read_buffer) {
     // Avoid the CHECK in SharedIOBuffer::~SharedIOBuffer().
     SharedIOBuffer* tmp = g_spare_read_buffer;
     g_spare_read_buffer = NULL;
     tmp->Release();
   }
 }