Inline gfx::Vector2d* ctors and integer conversions

ui/gfx/safe_integer_conversions.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/gfx/safe_integer_conversions.h"
-
-#include <cmath>
-#include <limits>
-
-namespace gfx {
-
-int ClampToInt(float value) {
-  if (value != value)
-    return 0; // no int NaN.
-  if (value >= std::numeric_limits<int>::max())
-    return std::numeric_limits<int>::max();
-  if (value <= std::numeric_limits<int>::min())
-    return std::numeric_limits<int>::min();
-  return static_cast<int>(value);
-}
-
-int ToFlooredInt(float value) {
-  return ClampToInt(std::floor(value));
-}
-
-int ToCeiledInt(float value) {
-  return ClampToInt(std::ceil(value));
-}
-
-int ToRoundedInt(float value) {
-  float rounded;
-  if (value >= 0.0f)
-    rounded = std::floor(value + 0.5f);
-  else
-    rounded = std::ceil(value - 0.5f);
-  return ClampToInt(rounded);
-}
-
-bool IsExpressibleAsInt(float value) {
-  if (value != value)
-    return false; // no int NaN.
-  if (value > std::numeric_limits<int>::max())
-    return false;
-  if (value < std::numeric_limits<int>::min())
-    return false;
-  return true;
-}
-
-}  // namespace gfx