Update base/timer.h code to pass through Location from call sites. (reland)

chrome/browser/chromeos/login/network_screen.cc

Index: chrome/browser/chromeos/login/network_screen.cc
diff --git a/chrome/browser/chromeos/login/network_screen.cc b/chrome/browser/chromeos/login/network_screen.cc
index 7fabbb90ac30f4e4c2a622bbfcfbc400f1e03b52..a860934ec5f91dd801e6026bd4d6aa3eed9928b0 100644
--- a/chrome/browser/chromeos/login/network_screen.cc
+++ b/chrome/browser/chromeos/login/network_screen.cc
@@ -170,7 +170,8 @@ void NetworkScreen::StopWaitingForConnection(const string16& network_id) {
 void NetworkScreen::WaitForConnection(const string16& network_id) {
   if (network_id_ != network_id || !connection_timer_.IsRunning()) {
     connection_timer_.Stop();
-    connection_timer_.Start(base::TimeDelta::FromSeconds(kConnectionTimeoutSec),
+    connection_timer_.Start(FROM_HERE,
+                            base::TimeDelta::FromSeconds(kConnectionTimeoutSec),
                             this,
                             &NetworkScreen::OnConnectionTimeout);
   }