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

chrome/browser/component_updater/component_updater_service.cc

Index: chrome/browser/component_updater/component_updater_service.cc
diff --git a/chrome/browser/component_updater/component_updater_service.cc b/chrome/browser/component_updater/component_updater_service.cc
index 8a753db791618abed22b7ab6cf1ac790086b3041..d2d27afae073d5d93aa777751a3184535144d28f 100644
--- a/chrome/browser/component_updater/component_updater_service.cc
+++ b/chrome/browser/component_updater/component_updater_service.cc
@@ -328,7 +328,7 @@ ComponentUpdateService::Status CrxUpdateService::Start() {
     Source<ComponentUpdateService>(this),
     NotificationService::NoDetails());
 
-  timer_.Start(base::TimeDelta::FromSeconds(config_->InitialDelay()),
+  timer_.Start(FROM_HERE, base::TimeDelta::FromSeconds(config_->InitialDelay()),
                this, &CrxUpdateService::ProcessPendingItems);
   return kOk;
 }
@@ -366,7 +366,7 @@ void CrxUpdateService::ScheduleNextRun(bool step_delay) {
       return;
   }
 
-  timer_.Start(base::TimeDelta::FromSeconds(delay),
+  timer_.Start(FROM_HERE, base::TimeDelta::FromSeconds(delay),
                this, &CrxUpdateService::ProcessPendingItems);
 }