Add time from navigation_start to NTP LogEvent

chrome/common/render_messages.h

 // 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.
 
 // Multiply-included file, no traditional include guard.
 #include <stdint.h>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 573 matching lines @@
 
 #if defined(OS_ANDROID)
 IPC_MESSAGE_ROUTED4(ChromeViewHostMsg_DidRetrieveMetaTagContent,
                     bool /* success */,
                     std::string /* tag_name */,
                     std::string /* tag_content */,
                     GURL /* expected_url */)
 #endif  // defined(OS_ANDROID)
 
 // Logs events from InstantExtended New Tab Pages.
-IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_LogEvent,
+IPC_MESSAGE_ROUTED3(ChromeViewHostMsg_LogEvent,
                     int /* page_seq_no */,
-                    NTPLoggingEventType /* event */)
+                    NTPLoggingEventType /* event */,
+                    int64 /* time */)

[Will Harris, 2015/03/16 17:39:03]

delta should always be positive, can this be a uint64

[fserb, 2015/03/16 17:49:38]

Done.

 
 // Logs an impression on one of the Most Visited tile on the InstantExtended
 // New Tab Page.
 IPC_MESSAGE_ROUTED3(ChromeViewHostMsg_LogMostVisitedImpression,
                     int /* page_seq_no */,
                     int /* position */,
                     base::string16 /* provider */)
 
 // Logs a navigation on one of the Most Visited tile on the InstantExtended
 // New Tab Page.
@@ skipping 70 matching lines @@
 
 // Tells the browser process whether the web page wants the banner to be shown.
 // This is a reply from ChromeViewMsg_AppBannerPromptRequest.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_AppBannerPromptReply,
                     int /* request_id */,
                     blink::WebAppBannerPromptReply /* reply */)
 
 // Sent by the renderer to indicate that a fields trial has been activated.
 IPC_MESSAGE_CONTROL1(ChromeViewHostMsg_FieldTrialActivated,
                      std::string /* name */)