Template methods on Timer classes instead of the classes themselves.

ui/views/controls/throbber.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/throbber.h"
 
+#include "base/bind.h"
+#include "base/location.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/animation/tween.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/paint_throbber.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/gfx/vector_icons_public.h"
 #include "ui/native_theme/common_theme.h"
 #include "ui/native_theme/native_theme.h"
@@ skipping 15 matching lines @@
 Throbber::~Throbber() {
   Stop();
 }
 
 void Throbber::Start() {
   if (IsRunning())
     return;
 
   start_time_ = base::TimeTicks::Now();
   const int kFrameTimeMs = 30;
-  timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(kFrameTimeMs), this,
-               &Throbber::SchedulePaint);
+  timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(kFrameTimeMs),
+               base::Bind(&Throbber::SchedulePaint, base::Unretained(this)));
   SchedulePaint();  // paint right away
 }
 
 void Throbber::Stop() {
   if (!IsRunning())
     return;
 
   timer_.Stop();
   SchedulePaint();
 }
@@ skipping 68 matching lines @@
   stop_timer_.Start(FROM_HERE,
                     base::TimeDelta::FromMilliseconds(stop_delay_ms_), this,
                     &SmoothedThrobber::StopDelayOver);
 }
 
 void SmoothedThrobber::StopDelayOver() {
   Throbber::Stop();
 }
 
 }  // namespace views