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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/CSSPathValue.h"
 
 #include "core/style/StylePath.h"
 #include "core/svg/SVGPathUtilities.h"
 
 namespace blink {
@@ skipping 15 matching lines @@
     , m_pathByteStream(pathByteStream)
     , m_cachedPath(cachedPath)
 {
     ASSERT(m_pathByteStream);
 }
 
 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();
 }
 
 StylePath* CSSPathValue::cachedPath()
 {
     if (!m_cachedPath)
         m_cachedPath = StylePath::create(m_pathByteStream);
     return m_cachedPath.get();
 }
 
@@ skipping 11 matching lines @@
 {
     CSSValue::traceAfterDispatch(visitor);
 }
 
 String CSSPathValue::pathString() const
 {
     return buildStringFromByteStream(*m_pathByteStream);
 }
 
 } // namespace blink