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

chrome/renderer/security_filter_peer.h

Index: chrome/renderer/security_filter_peer.h
diff --git a/chrome/renderer/security_filter_peer.h b/chrome/renderer/security_filter_peer.h
index 7095d76dfa33e5d3a7b81722f52612e5a01a6064..1de46687a707504c3cedee8fdbb6fe968e89fc41 100644
--- a/chrome/renderer/security_filter_peer.h
+++ b/chrome/renderer/security_filter_peer.h
@@ -43,7 +43,7 @@ class SecurityFilterPeer : public webkit_glue::ResourceLoaderBridge::Peer {
                               int encoded_data_length);
   virtual void OnCompletedRequest(const net::URLRequestStatus& status,
                                   const std::string& security_info,
-                                  const base::Time& completion_time);
+                                  const base::TimeTicks& completion_time);
 
  protected:
   SecurityFilterPeer(webkit_glue::ResourceLoaderBridge* resource_loader_bridge,
@@ -73,7 +73,7 @@ class BufferedPeer : public SecurityFilterPeer {
                               int encoded_data_length);
   virtual void OnCompletedRequest(const net::URLRequestStatus& status,
                                   const std::string& security_info,
-                                  const base::Time& completion_time);
+                                  const base::TimeTicks& completion_time);
 
  protected:
   // Invoked when the entire request has been processed before the data is sent
@@ -115,7 +115,7 @@ class ReplaceContentPeer : public SecurityFilterPeer {
                               int encoded_data_length);
   virtual void OnCompletedRequest(const net::URLRequestStatus& status,
                                   const std::string& security_info,
-                                  const base::Time& completion_time);
+                                  const base::TimeTicks& completion_time);
 
  private:
   webkit_glue::ResourceResponseInfo response_info_;