[wrapper-tracing] Untangle non-trivial mixin ctors

third_party/WebKit/Source/modules/cachestorage/CacheTest.cpp

Index: third_party/WebKit/Source/modules/cachestorage/CacheTest.cpp
diff --git a/third_party/WebKit/Source/modules/cachestorage/CacheTest.cpp b/third_party/WebKit/Source/modules/cachestorage/CacheTest.cpp
index 03235b76a0555930acdac908fe3a9977908506b8..73267b81969523c04b47840d591aa1a111fb8ce6 100644
--- a/third_party/WebKit/Source/modules/cachestorage/CacheTest.cpp
+++ b/third_party/WebKit/Source/modules/cachestorage/CacheTest.cpp
@@ -704,11 +704,11 @@ TEST_F(CacheStorageTest, Add) {
   fetcher->setExpectedFetchUrl(&url);
 
   Request* request = newRequestFromUrl(url);
-  Response* response =
-      Response::create(getScriptState(),
-                       new BodyStreamBuffer(getScriptState(),
-                                            new FormDataBytesConsumer(content)),
-                       contentType, ResponseInit(), exceptionState);
+  Response* response = Response::create(
+      getScriptState(),
+      BodyStreamBuffer::create(getScriptState(),
+                               new FormDataBytesConsumer(content)),
+      contentType, ResponseInit(), exceptionState);
   fetcher->setResponse(response);
 
   WebVector<WebServiceWorkerCache::BatchOperation> expectedPutOperations(