Convert //cc from scoped_ptr to std::unique_ptr.

cc/animation/timing_function.cc

 // Copyright 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 "cc/animation/timing_function.h"
+
+#include <memory>
+
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "cc/animation/timing_function.h"
+#include "base/memory/ptr_util.h"
 #include "cc/base/math_util.h"
 
 namespace cc {
 
 TimingFunction::TimingFunction() {}
 
 TimingFunction::~TimingFunction() {}
 
-scoped_ptr<CubicBezierTimingFunction> CubicBezierTimingFunction::Create(
-    double x1, double y1, double x2, double y2) {
-  return make_scoped_ptr(new CubicBezierTimingFunction(x1, y1, x2, y2));
+std::unique_ptr<CubicBezierTimingFunction>
+CubicBezierTimingFunction::Create(double x1, double y1, double x2, double y2) {
+  return base::WrapUnique(new CubicBezierTimingFunction(x1, y1, x2, y2));
 }
 
 CubicBezierTimingFunction::CubicBezierTimingFunction(double x1,
                                                      double y1,
                                                      double x2,
                                                      double y2)
     : bezier_(x1, y1, x2, y2) {}
 
 CubicBezierTimingFunction::~CubicBezierTimingFunction() {}
 
 float CubicBezierTimingFunction::GetValue(double x) const {
   return static_cast<float>(bezier_.Solve(x));
 }
 
 float CubicBezierTimingFunction::Velocity(double x) const {
   return static_cast<float>(bezier_.Slope(x));
 }
 
 void CubicBezierTimingFunction::Range(float* min, float* max) const {
   double min_d = 0;
   double max_d = 1;
   bezier_.Range(&min_d, &max_d);
   *min = static_cast<float>(min_d);
   *max = static_cast<float>(max_d);
 }
 
-scoped_ptr<TimingFunction> CubicBezierTimingFunction::Clone() const {
-  return make_scoped_ptr(new CubicBezierTimingFunction(*this));
+std::unique_ptr<TimingFunction> CubicBezierTimingFunction::Clone() const {
+  return base::WrapUnique(new CubicBezierTimingFunction(*this));
 }
 
 // These numbers come from
 // http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag.
-scoped_ptr<TimingFunction> EaseTimingFunction::Create() {
+std::unique_ptr<TimingFunction> EaseTimingFunction::Create() {
   return CubicBezierTimingFunction::Create(0.25, 0.1, 0.25, 1.0);
 }
 
-scoped_ptr<TimingFunction> EaseInTimingFunction::Create() {
+std::unique_ptr<TimingFunction> EaseInTimingFunction::Create() {
   return CubicBezierTimingFunction::Create(0.42, 0.0, 1.0, 1.0);
 }
 
-scoped_ptr<TimingFunction> EaseOutTimingFunction::Create() {
+std::unique_ptr<TimingFunction> EaseOutTimingFunction::Create() {
   return CubicBezierTimingFunction::Create(0.0, 0.0, 0.58, 1.0);
 }
 
-scoped_ptr<TimingFunction> EaseInOutTimingFunction::Create() {
+std::unique_ptr<TimingFunction> EaseInOutTimingFunction::Create() {
   return CubicBezierTimingFunction::Create(0.42, 0.0, 0.58, 1);
 }
 
-scoped_ptr<StepsTimingFunction> StepsTimingFunction::Create(
+std::unique_ptr<StepsTimingFunction> StepsTimingFunction::Create(
     int steps,
     float steps_start_offset) {
-  return make_scoped_ptr(new StepsTimingFunction(steps, steps_start_offset));
+  return base::WrapUnique(new StepsTimingFunction(steps, steps_start_offset));
 }
 
 StepsTimingFunction::StepsTimingFunction(int steps, float steps_start_offset)
     : steps_(steps), steps_start_offset_(steps_start_offset) {
   // Restrict it to CSS presets: step_start, step_end and step_middle.
   // See the Web Animations specification, 3.12.4. Timing in discrete steps.
   DCHECK(steps_start_offset_ == 0 || steps_start_offset_ == 1 ||
          steps_start_offset_ == 0.5);
 }
 
 StepsTimingFunction::~StepsTimingFunction() {
 }
 
 float StepsTimingFunction::GetValue(double t) const {
   const double steps = static_cast<double>(steps_);
   const double value = MathUtil::ClampToRange(
       std::floor((steps * t) + steps_start_offset_) / steps, 0.0, 1.0);
   return static_cast<float>(value);
 }
 
-scoped_ptr<TimingFunction> StepsTimingFunction::Clone() const {
-  return make_scoped_ptr(new StepsTimingFunction(*this));
+std::unique_ptr<TimingFunction> StepsTimingFunction::Clone() const {
+  return base::WrapUnique(new StepsTimingFunction(*this));
 }
 
 void StepsTimingFunction::Range(float* min, float* max) const {
   *min = 0.0f;
   *max = 1.0f;
 }
 
 float StepsTimingFunction::Velocity(double x) const {
   return 0.0f;
 }
 
 }  // namespace cc