Reapply the non-MathExtras parts of

Source/platform/geometry/FloatSize.h

Index: Source/platform/geometry/FloatSize.h
diff --git a/Source/platform/geometry/FloatSize.h b/Source/platform/geometry/FloatSize.h
index 1d73c75d5ac9bd0b66ac1289fdb46fef8c631960..64f76663eec3687897e1434b7894b645acb63b86 100644
--- a/Source/platform/geometry/FloatSize.h
+++ b/Source/platform/geometry/FloatSize.h
@@ -176,22 +176,22 @@ inline bool operator!=(const FloatSize& a, const FloatSize& b)
 
 inline IntSize roundedIntSize(const FloatSize& p)
 {
-    return IntSize(clampToInteger(roundf(p.width())), clampToInteger(roundf(p.height())));
+    return IntSize(clampTo<int>(roundf(p.width())), clampTo<int>(roundf(p.height())));
 }
 
 inline IntSize flooredIntSize(const FloatSize& p)
 {
-    return IntSize(clampToInteger(floorf(p.width())), clampToInteger(floorf(p.height())));
+    return IntSize(clampTo<int>(floorf(p.width())), clampTo<int>(floorf(p.height())));
 }
 
 inline IntSize expandedIntSize(const FloatSize& p)
 {
-    return IntSize(clampToInteger(ceilf(p.width())), clampToInteger(ceilf(p.height())));
+    return IntSize(clampTo<int>(ceilf(p.width())), clampTo<int>(ceilf(p.height())));
 }
 
 inline IntPoint flooredIntPoint(const FloatSize& p)
 {
-    return IntPoint(clampToInteger(floorf(p.width())), clampToInteger(floorf(p.height())));
+    return IntPoint(clampTo<int>(floorf(p.width())), clampTo<int>(floorf(p.height())));
 }
 
 } // namespace blink