cc: Remove use of PassAs() and constructor-casting with scoped_ptr.

cc/base/math_util.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/base/math_util.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
@@ skipping 675 matching lines @@
   float projected_length =
       gfx::DotProduct(source, destination) / destination.LengthSquared();
   return gfx::Vector2dF(projected_length * destination.x(),
                         projected_length * destination.y());
 }
 
 scoped_ptr<base::Value> MathUtil::AsValue(const gfx::Size& s) {
   scoped_ptr<base::DictionaryValue> res(new base::DictionaryValue());
   res->SetDouble("width", s.width());
   res->SetDouble("height", s.height());
-  return res.PassAs<base::Value>();
+  return res.Pass();
 }
 
 scoped_ptr<base::Value> MathUtil::AsValue(const gfx::Rect& r) {
   scoped_ptr<base::ListValue> res(new base::ListValue());
   res->AppendInteger(r.x());
   res->AppendInteger(r.y());
   res->AppendInteger(r.width());
   res->AppendInteger(r.height());
-  return res.PassAs<base::Value>();
+  return res.Pass();
 }
 
 bool MathUtil::FromValue(const base::Value* raw_value, gfx::Rect* out_rect) {
   const base::ListValue* value = NULL;
   if (!raw_value->GetAsList(&value))
     return false;
 
   if (value->GetSize() != 4)
     return false;
 
   int x, y, w, h;
   bool ok = true;
   ok &= value->GetInteger(0, &x);
   ok &= value->GetInteger(1, &y);
   ok &= value->GetInteger(2, &w);
   ok &= value->GetInteger(3, &h);
   if (!ok)
     return false;
 
   *out_rect = gfx::Rect(x, y, w, h);
   return true;
 }
 
 scoped_ptr<base::Value> MathUtil::AsValue(const gfx::PointF& pt) {
   scoped_ptr<base::ListValue> res(new base::ListValue());
   res->AppendDouble(pt.x());
   res->AppendDouble(pt.y());
-  return res.PassAs<base::Value>();
+  return res.Pass();
 }
 
 void MathUtil::AddToTracedValue(const gfx::Size& s,
                                 base::debug::TracedValue* res) {
   res->SetDouble("width", s.width());
   res->SetDouble("height", s.height());
 }
 
 void MathUtil::AddToTracedValue(const gfx::SizeF& s,
                                 base::debug::TracedValue* res) {
@@ skipping 75 matching lines @@
 
 double MathUtil::AsDoubleSafely(double value) {
   return std::min(value, std::numeric_limits<double>::max());
 }
 
 float MathUtil::AsFloatSafely(float value) {
   return std::min(value, std::numeric_limits<float>::max());
 }
 
 }  // namespace cc