offset-rotate: Clamp rotation to float prior to assignment

third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp

Index: third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp b/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
index 24da6892c3a0b9b62a186d07c05577175b692ce9..f0d69113ae10ac406ccee4ca68bdb68f130194e5 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
@@ -895,13 +895,13 @@ StyleOffsetRotation StyleBuilderConverter::convertOffsetRotate(
     } else if (item->isIdentifierValue() &&
                toCSSIdentifierValue(*item).getValueID() == CSSValueReverse) {
       result.type = OffsetRotationAuto;
-      result.angle += 180;
+      result.angle = clampTo<float>(result.angle + 180);
     } else {
       const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(*item);
-      result.angle += primitiveValue.computeDegrees();
+      result.angle =
+          clampTo<float>(result.angle + primitiveValue.computeDegrees());
     }
   }
-  result.angle = clampTo<float>(result.angle);
 
   return result;
 }