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

ui/gfx/range/range.cc

Index: ui/gfx/range/range.cc
diff --git a/ui/gfx/range/range.cc b/ui/gfx/range/range.cc
index 230403aa292bdfc23605090ed9a4567781e28675..fa837d0070d305d28d92319e642c9ec741e84264 100644
--- a/ui/gfx/range/range.cc
+++ b/ui/gfx/range/range.cc
@@ -7,67 +7,12 @@
 #include <inttypes.h>
 
 #include <algorithm>
-#include <limits>
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 
 namespace gfx {
 
-Range::Range()
-    : start_(0),
-      end_(0) {
-}
-
-Range::Range(uint32_t start, uint32_t end)
-    : start_(start),
-      end_(end) {
-}
-
-Range::Range(uint32_t position)
-    : start_(position),
-      end_(position) {
-}
-
-// static
-const Range Range::InvalidRange() {
-  return Range(std::numeric_limits<uint32_t>::max());
-}
-
-bool Range::IsValid() const {
-  return *this != InvalidRange();
-}
-
-uint32_t Range::GetMin() const {
-  return std::min(start(), end());
-}
-
-uint32_t Range::GetMax() const {
-  return std::max(start(), end());
-}
-
-bool Range::operator==(const Range& other) const {
-  return start() == other.start() && end() == other.end();
-}
-
-bool Range::operator!=(const Range& other) const {
-  return !(*this == other);
-}
-
-bool Range::EqualsIgnoringDirection(const Range& other) const {
-  return GetMin() == other.GetMin() && GetMax() == other.GetMax();
-}
-
-bool Range::Intersects(const Range& range) const {
-  return IsValid() && range.IsValid() &&
-      !(range.GetMax() < GetMin() || range.GetMin() >= GetMax());
-}
-
-bool Range::Contains(const Range& range) const {
-  return IsValid() && range.IsValid() &&
-      GetMin() <= range.GetMin() && range.GetMax() <= GetMax();
-}
-
 Range Range::Intersect(const Range& range) const {
   uint32_t min = std::max(GetMin(), range.GetMin());
   uint32_t max = std::min(GetMax(), range.GetMax());