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

chrome/renderer/extensions/extension_dispatcher.cc

Index: chrome/renderer/extensions/extension_dispatcher.cc
diff --git a/chrome/renderer/extensions/extension_dispatcher.cc b/chrome/renderer/extensions/extension_dispatcher.cc
index a21cabf5d43c3b961c333e75ea09a524708ab83e..44d29601901646992f5b0461cd81dabfd501975f 100644
--- a/chrome/renderer/extensions/extension_dispatcher.cc
+++ b/chrome/renderer/extensions/extension_dispatcher.cc
@@ -81,7 +81,7 @@ void ExtensionDispatcher::WebKitInitialized() {
   if (is_extension_process_) {
     forced_idle_timer_.Start(
         base::TimeDelta::FromSeconds(kMaxExtensionIdleHandlerDelayS),
-        RenderThread::current(), &RenderThread::IdleHandler);
+        RenderThread::current(), &RenderThread::IdleHandler, FROM_HERE);
   }
 
   RegisterExtension(extensions_v8::ChromeAppExtension::Get(this), false);
@@ -120,7 +120,7 @@ void ExtensionDispatcher::IdleNotification() {
     forced_idle_timer_.Stop();
     forced_idle_timer_.Start(
         base::TimeDelta::FromSeconds(forced_delay_s),
-        RenderThread::current(), &RenderThread::IdleHandler);
+        RenderThread::current(), &RenderThread::IdleHandler, FROM_HERE);
   }
 }