Update from https://crrev.com/305340

base/profiler/scoped_tracker.cc

Index: base/profiler/scoped_tracker.cc
diff --git a/base/profiler/scoped_tracker.cc b/base/profiler/scoped_tracker.cc
index 26b17c015539b043d6b5c981b7a3c802587c7723..d15b7de6dcd2d3d6763d6395f2f471b79c210092 100644
--- a/base/profiler/scoped_tracker.cc
+++ b/base/profiler/scoped_tracker.cc
@@ -12,13 +12,6 @@ namespace {
 
 ScopedProfile::Mode g_scoped_profile_mode = ScopedProfile::DISABLED;
 
-// Executes |callback|, augmenting it with provided |location|.
-void ExecuteAndTrackCallback(const Location& location,
-                             const base::Closure& callback) {
-  ScopedProfile tracking_profile(location, ScopedProfile::ENABLED);
-  callback.Run();
-}
-
 }  // namespace
 
 // static
@@ -26,15 +19,6 @@ void ScopedTracker::Enable() {
   g_scoped_profile_mode = ScopedProfile::ENABLED;
 }
 
-// static
-base::Closure ScopedTracker::TrackCallback(const Location& location,
-                                           const base::Closure& callback) {
-  if (g_scoped_profile_mode != ScopedProfile::ENABLED)
-    return callback;
-
-  return base::Bind(ExecuteAndTrackCallback, location, callback);
-}
-
 ScopedTracker::ScopedTracker(const Location& location)
     : scoped_profile_(location, g_scoped_profile_mode) {
 }