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

content/common/resource_dispatcher.h

Index: content/common/resource_dispatcher.h
diff --git a/content/common/resource_dispatcher.h b/content/common/resource_dispatcher.h
index 6cc715717bca102d4a9565183a87322daef4ed3c..72cf7169694a47faaef8310ad02075000271c262 100644
--- a/content/common/resource_dispatcher.h
+++ b/content/common/resource_dispatcher.h
@@ -105,13 +105,19 @@ class CONTENT_EXPORT ResourceDispatcher : public IPC::Channel::Listener {
       int request_id,
       int64 position,
       int64 size);
-  void OnReceivedResponse(int request_id, const ResourceResponseHead&);
+  void OnReceivedResponse(
+      int request_id,
+      const ResourceResponseHead&,
+      const base::TimeTicks& start_time,
+      const base::TimeTicks& end_time);
   void OnReceivedCachedMetadata(int request_id, const std::vector<char>& data);
   void OnReceivedRedirect(
       const IPC::Message& message,
       int request_id,
       const GURL& new_url,
-      const webkit_glue::ResourceResponseInfo& info);
+      const webkit_glue::ResourceResponseInfo& info,
+      const base::TimeTicks& start_time,
+      const base::TimeTicks& end_time);
   void OnReceivedData(
       const IPC::Message& message,
       int request_id,
@@ -126,7 +132,7 @@ class CONTENT_EXPORT ResourceDispatcher : public IPC::Channel::Listener {
       int request_id,
       const net::URLRequestStatus& status,
       const std::string& security_info,
-      const base::Time& completion_time);
+      const base::TimeTicks& completion_time);
 
   // Dispatch the message to one of the message response handlers.
   void DispatchMessage(const IPC::Message& message);