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

chrome/browser/instant/instant_controller.cc

Index: chrome/browser/instant/instant_controller.cc
diff --git a/chrome/browser/instant/instant_controller.cc b/chrome/browser/instant/instant_controller.cc
index 7334e48026702307fbdfc2473f8424fd2b282d92..5acd71cb8e2f6fb7e659ed849587b19361692854 100644
--- a/chrome/browser/instant/instant_controller.cc
+++ b/chrome/browser/instant/instant_controller.cc
@@ -517,7 +517,7 @@ void InstantController::InstantStatusChanged(InstantLoader* loader) {
     show_timer_.Stop();
     show_timer_.Start(
         base::TimeDelta::FromMilliseconds(kShowDelayMS),
-        this, &InstantController::ShowTimerFired);
+        this, &InstantController::ShowTimerFired, FROM_HERE);
     UpdateDisplayableLoader();
     return;
   }
@@ -665,7 +665,8 @@ void InstantController::ScheduleUpdate(const GURL& url) {
 
   update_timer_.Stop();
   update_timer_.Start(base::TimeDelta::FromMilliseconds(kUpdateDelayMS),
-                      this, &InstantController::ProcessScheduledUpdate);
+                      this, &InstantController::ProcessScheduledUpdate,
+                      FROM_HERE);
 }
 
 void InstantController::ProcessScheduledUpdate() {
@@ -721,7 +722,7 @@ void InstantController::UpdateLoader(const TemplateURL* template_url,
     if (!new_loader->http_status_ok()) {
       show_timer_.Start(
           base::TimeDelta::FromMilliseconds(kShowDelayMS),
-          this, &InstantController::ShowTimerFired);
+          this, &InstantController::ShowTimerFired, FROM_HERE);
     }
   }
   UpdateDisplayableLoader();