Avoid LSan false positives from CSSPathValue::emptyValue().

third_party/WebKit/Source/core/css/CSSPathValue.cpp

Index: third_party/WebKit/Source/core/css/CSSPathValue.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSPathValue.cpp b/third_party/WebKit/Source/core/css/CSSPathValue.cpp
index f725d430de82061109b0da6000ed1000a95e6bfe..dcfbf15a0ef0ea179d3552dc8fb3d642e4e14082 100644
--- a/third_party/WebKit/Source/core/css/CSSPathValue.cpp
+++ b/third_party/WebKit/Source/core/css/CSSPathValue.cpp
@@ -33,9 +33,22 @@ CSSPathValue::~CSSPathValue()
 {
 }
 
+namespace {
+
+PassRefPtrWillBeRawPtr<CSSPathValue> createPathValue()
+{
+    RefPtr<SVGPathByteStream> pathByteStream = SVGPathByteStream::create();
+    // Need to be registered as LSan ignored, as it will be reachable and
+    // separately referred to by emptyPathValue() callers.
+    LEAK_SANITIZER_IGNORE_OBJECT(pathByteStream.get());
+    return CSSPathValue::create(pathByteStream.release());
+}
+
+}
+
 CSSPathValue* CSSPathValue::emptyPathValue()
 {
-    DEFINE_STATIC_LOCAL(RefPtrWillBePersistent<CSSPathValue>, empty, (CSSPathValue::create(SVGPathByteStream::create())));
+    DEFINE_STATIC_LOCAL(RefPtrWillBePersistent<CSSPathValue>, empty, (createPathValue()));
     return empty.get();
 }