Release Oilpan heap singletons prior to LSan leak detection.

third_party/WebKit/Source/wtf/text/StringImpl.cpp

Index: third_party/WebKit/Source/wtf/text/StringImpl.cpp
diff --git a/third_party/WebKit/Source/wtf/text/StringImpl.cpp b/third_party/WebKit/Source/wtf/text/StringImpl.cpp
index 64bae95694bafcc6f7cbb224805a7a8969eb86fe..0859408142fa8729d5a8ff50d826972f3f0e3d86 100644
--- a/third_party/WebKit/Source/wtf/text/StringImpl.cpp
+++ b/third_party/WebKit/Source/wtf/text/StringImpl.cpp
@@ -361,7 +361,7 @@ StringImpl* StringImpl::createStatic(const char* string, unsigned length, unsign
     RELEASE_ASSERT(length <= ((std::numeric_limits<unsigned>::max() - sizeof(StringImpl)) / sizeof(LChar)));
     size_t size = sizeof(StringImpl) + length * sizeof(LChar);
 
-    WTF_ANNOTATE_SCOPED_MEMORY_LEAK;
+    WTF_ANNOTATE_LEAK_SCOPE;
     StringImpl* impl = static_cast<StringImpl*>(Partitions::bufferMalloc(size, "WTF::StringImpl"));
 
     LChar* data = reinterpret_cast<LChar*>(impl + 1);