Make much of gfx::Range[F] constexpr.

ui/gfx/range/range_f.cc

Index: ui/gfx/range/range_f.cc
diff --git a/ui/gfx/range/range_f.cc b/ui/gfx/range/range_f.cc
index 665dc8b6f29aa1332415e5b1b6c2803691e2313e..b3bfc6956927b8cf0110b9376506b168585162ce 100644
--- a/ui/gfx/range/range_f.cc
+++ b/ui/gfx/range/range_f.cc
@@ -8,67 +8,12 @@
 
 #include <algorithm>
 #include <cmath>
-#include <limits>
 
 #include "base/format_macros.h"
 #include "base/strings/stringprintf.h"
 
 namespace gfx {
 
-RangeF::RangeF()
-    : start_(0.0f),
-      end_(0.0f) {
-}
-
-RangeF::RangeF(float start, float end)
-    : start_(start),
-      end_(end) {
-}
-
-RangeF::RangeF(float position)
-    : start_(position),
-      end_(position) {
-}
-
-// static
-const RangeF RangeF::InvalidRange() {
-  return RangeF(std::numeric_limits<float>::max());
-}
-
-bool RangeF::IsValid() const {
-  return *this != InvalidRange();
-}
-
-float RangeF::GetMin() const {
-  return std::min(start(), end());
-}
-
-float RangeF::GetMax() const {
-  return std::max(start(), end());
-}
-
-bool RangeF::operator==(const RangeF& other) const {
-  return start() == other.start() && end() == other.end();
-}
-
-bool RangeF::operator!=(const RangeF& other) const {
-  return !(*this == other);
-}
-
-bool RangeF::EqualsIgnoringDirection(const RangeF& other) const {
-  return GetMin() == other.GetMin() && GetMax() == other.GetMax();
-}
-
-bool RangeF::Intersects(const RangeF& range) const {
-  return IsValid() && range.IsValid() &&
-      !(range.GetMax() < GetMin() || range.GetMin() >= GetMax());
-}
-
-bool RangeF::Contains(const RangeF& range) const {
-  return IsValid() && range.IsValid() &&
-      GetMin() <= range.GetMin() && range.GetMax() <= GetMax();
-}
-
 RangeF RangeF::Intersect(const RangeF& range) const {
   float min = std::max(GetMin(), range.GetMin());
   float max = std::min(GetMax(), range.GetMax());
@@ -85,21 +30,20 @@ RangeF RangeF::Intersect(const Range& range) const {
 }
 
 Range RangeF::Floor() const {
-  size_t start = start_ > 0.0f ? static_cast<size_t>(std::floor(start_)) : 0;
-  size_t end = end_ > 0.0f ? static_cast<size_t>(std::floor(end_)) : 0;
+  uint32_t start = start_ > 0 ? static_cast<uint32_t>(std::floor(start_)) : 0;
+  uint32_t end = end_ > 0 ? static_cast<uint32_t>(std::floor(end_)) : 0;
   return Range(start, end);
 }
 
 Range RangeF::Ceil() const {
-  size_t start = start_ > 0.0f ? static_cast<size_t>(std::ceil(start_)) : 0;
-  size_t end = end_ > 0.0f ? static_cast<size_t>(std::ceil(end_)) : 0;
+  uint32_t start = start_ > 0 ? static_cast<uint32_t>(std::ceil(start_)) : 0;
+  uint32_t end = end_ > 0 ? static_cast<uint32_t>(std::ceil(end_)) : 0;
   return Range(start, end);
 }
 
 Range RangeF::Round() const {
-  size_t start =
-      start_ > 0.0f ? static_cast<size_t>(std::floor(start_ + 0.5f)) : 0;
-  size_t end = end_ > 0.0f ? static_cast<size_t>(std::floor(end_ + 0.5f)) : 0;
+  uint32_t start = start_ > 0 ? static_cast<uint32_t>(std::round(start_)) : 0;
+  uint32_t end = end_ > 0 ? static_cast<uint32_t>(std::round(end_)) : 0;
   return Range(start, end);
 }