Do not use vector<scoped_ptr<>>.

chrome/browser/chromeos/ui/accessibility_focus_ring_controller.cc

 // Copyright 2014 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/chromeos/ui/accessibility_focus_ring_controller.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/shell.h"
 #include "base/logging.h"
 #include "chrome/browser/chromeos/ui/focus_ring_layer.h"
@@ skipping 44 matching lines @@
   Update();
 }
 
 void AccessibilityFocusRingController::Update() {
   previous_rings_.swap(rings_);
   rings_.clear();
   RectsToRings(rects_, &rings_);
   layers_.resize(rings_.size());
   for (size_t i = 0; i < rings_.size(); ++i) {
     if (!layers_[i])
-      layers_[i].reset(new AccessibilityFocusRingLayer(this));
+      layers_[i] = new AccessibilityFocusRingLayer(this);
 
     if (i > 0) {
       // Focus rings other than the first one don't animate.
       layers_[i]->Set(rings_[i]);
       continue;
     }
 
     gfx::Rect bounds = rings_[0].GetBounds();
     gfx::Display display =
       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds);
@@ skipping 240 matching lines @@
   double fraction = delta.InSecondsF() / transition_time.InSecondsF();
 
   // Ease-in effect.
   fraction = pow(fraction, 0.3);
 
   layers_[0]->Set(AccessibilityFocusRing::Interpolate(
       previous_rings_[0], rings_[0], fraction));
 }
 
 }  // namespace chromeos