CSS scale property: scale with one value only affects X

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 2b27368a280f7bc8ff1e3e7036892457507f99fb..d5d79074e0a2f54d3ca44debbc5517325df8f476 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
@@ -1250,7 +1250,7 @@ PassRefPtr<ScaleTransformOperation> StyleBuilderConverter::convertScale(
   const CSSValueList& list = toCSSValueList(value);
   ASSERT(list.length() <= 3);
   double sx = toCSSPrimitiveValue(list.item(0)).getDoubleValue();
-  double sy = sx;
+  double sy = 1;
   double sz = 1;
   if (list.length() >= 2)
     sy = toCSSPrimitiveValue(list.item(1)).getDoubleValue();