net: Return LoadTiming information in the case of a cache hit

net/http/http_transaction.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_TRANSACTION_H_
 #define NET_HTTP_HTTP_TRANSACTION_H_
 
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_export.h"
@@ skipping 95 matching lines @@
   // info is not available.
   virtual const HttpResponseInfo* GetResponseInfo() const = 0;
 
   // Returns the load state for this transaction.
   virtual LoadState GetLoadState() const = 0;
 
   // Returns the upload progress in bytes.  If there is no upload data,
   // zero will be returned.  This does not include the request headers.
   virtual UploadProgress GetUploadProgress() const = 0;
 
-  // Populates all of load timing, except for request start times.
+  // Populates all of load timing, except for request start times and receive
+  // headers time.
   // |load_timing_info| must have all null times when called.  Returns false and
-  // does not modify |load_timing_info| if not currently connected.
+  // does not modify |load_timing_info| if there's no timing information to
+  // provide.
   virtual bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const = 0;
 
   // Called when the priority of the parent job changes.
   virtual void SetPriority(RequestPriority priority) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_TRANSACTION_H_