Template methods on Timer classes instead of the classes themselves.

chrome/browser/ui/views/download/download_item_view_md.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 "chrome/browser/ui/views/download/download_item_view_md.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 224 matching lines @@
   if (sampling_event_.get())
     sampling_event_->CreateUserDecisionEvent(ExperienceSamplingEvent::kIgnore);
 }
 
 // Progress animation handlers.
 
 void DownloadItemViewMd::StartDownloadProgress() {
   if (progress_timer_.IsRunning())
     return;
   progress_start_time_ = base::TimeTicks::Now();
-  progress_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(
-                                       DownloadShelf::kProgressRateMs),
-                        this, &DownloadItemViewMd::SchedulePaint);
+  progress_timer_.Start(
+      FROM_HERE,
+      base::TimeDelta::FromMilliseconds(DownloadShelf::kProgressRateMs),
+      base::Bind(&DownloadItemViewMd::SchedulePaint, base::Unretained(this)));
 }
 
 void DownloadItemViewMd::StopDownloadProgress() {
   if (!progress_timer_.IsRunning())
     return;
   previous_progress_elapsed_ += base::TimeTicks::Now() - progress_start_time_;
   progress_start_time_ = base::TimeTicks();
   progress_timer_.Stop();
 }
 
@@ skipping 852 matching lines @@
     State to,
     gfx::SlideAnimation* animation) {
   if (from == NORMAL && to == HOT) {
     animation->Show();
   } else if (from == HOT && to == NORMAL) {
     animation->Hide();
   } else if (from != to) {
     animation->Reset((to == HOT) ? 1.0 : 0.0);
   }
 }