Clamp double to int instead of using static_cast.

Better overflow handling for CSSPrimitiveValue::Create.

Bug: 904872
Change-Id: Ieafc28406497b4a676994efdc6515959549a7ba1
Reviewed-on: https://chromium-review.googlesource.com/c/1335527Reviewed-by: Anders Ruud <andruud@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607947}

third_party/blink/renderer/core/css/css_primitive_value.cc

@@ -97,7 +97,7 @@ CSSPrimitiveValue* CSSPrimitiveValue::Create(double value, UnitType type) {
   if (value < 0 || value > CSSValuePool::kMaximumCacheableIntegerValue)
     return new CSSPrimitiveValue(value, type);
 
-  int int_value = static_cast<int>(value);
+  int int_value = clampTo<int>(value);
   if (value != int_value)
     return new CSSPrimitiveValue(value, type);