Replace gfx::ClampToInt with base::saturated_cast.

ui/gfx/geometry/safe_integer_conversions.h

Index: ui/gfx/geometry/safe_integer_conversions.h
diff --git a/ui/gfx/geometry/safe_integer_conversions.h b/ui/gfx/geometry/safe_integer_conversions.h
index 873378018b497f6c1b0ce5465e6931e7e0d412b8..5efe134f0793ba51f1ba0908e04b9c987e638073 100644
--- a/ui/gfx/geometry/safe_integer_conversions.h
+++ b/ui/gfx/geometry/safe_integer_conversions.h
@@ -8,34 +8,25 @@
 #include <cmath>
 #include <limits>
 
+#include "base/numerics/safe_conversions.h"
 #include "ui/gfx/gfx_export.h"
 
 namespace gfx {
 
-inline 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);
-}
-
 inline int ToFlooredInt(float value) {
-  return ClampToInt(std::floor(value));
+  return base::saturated_cast<int>(std::floor(value));
 }
 
 inline int ToCeiledInt(float value) {
-  return ClampToInt(std::ceil(value));
+  return base::saturated_cast<int>(std::ceil(value));
 }
 
 inline int ToFlooredInt(double value) {
-  return ClampToInt(std::floor(value));
+  return base::saturated_cast<int>(std::floor(value));
 }
 
 inline int ToCeiledInt(double value) {
-  return ClampToInt(std::ceil(value));
+  return base::saturated_cast<int>(std::ceil(value));
 }
 
 inline int ToRoundedInt(float value) {
@@ -44,7 +35,7 @@ inline int ToRoundedInt(float value) {
     rounded = std::floor(value + 0.5f);
   else
     rounded = std::ceil(value - 0.5f);
-  return ClampToInt(rounded);
+  return base::saturated_cast<int>(rounded);
 }
 
 inline int ToRoundedInt(double value) {
@@ -53,7 +44,7 @@ inline int ToRoundedInt(double value) {
     rounded = std::floor(value + 0.5);
   else
     rounded = std::ceil(value - 0.5);
-  return ClampToInt(rounded);
+  return base::saturated_cast<int>(rounded);
 }
 
 inline bool IsExpressibleAsInt(float value) {