(DEPRECATED) Send navigation_start to browser process in DidStartProvisionalLoad

third_party/WebKit/public/web/WebDataSource.h

Index: third_party/WebKit/public/web/WebDataSource.h
diff --git a/third_party/WebKit/public/web/WebDataSource.h b/third_party/WebKit/public/web/WebDataSource.h
index 29d725fdae621a256d9ec0b7c39442f81e9a456c..18f183a71ab9b8da8f2bc4689bf4a225ad0ccb3f 100644
--- a/third_party/WebKit/public/web/WebDataSource.h
+++ b/third_party/WebKit/public/web/WebDataSource.h
@@ -103,6 +103,10 @@ public:
     // Calling it later may confuse users, because JavaScript may have run and
     // the user may have already recorded the original value.
     virtual void setNavigationStartTime(double) = 0;
+    // Gets the navigation start time. Useful if the embedder wants the
+    // navigation start time in the same format they set it in, rather than the
+    // wall time that WebPerformance reports.
+    virtual double getNavigationStartTime() = 0;

[clamy, 2015/10/28 12:40:01]

What is the issue with getting the time back as a wall time?

[Charlie Harrison, 2015/10/28 14:45:00]

DocumentLoadTiming stores the timing as TimeTicks doubles, but PerformanceTiming
/ WebPerformance converts them to time since epoch for reporting to javascript.
I'll update the comment to be more clear.

 
 protected:
     ~WebDataSource() { }