[wrapper-tracing] Untangle non-trivial mixin ctors

third_party/WebKit/Source/modules/fetch/FetchRequestData.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 "modules/fetch/FetchRequestData.h"
 
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/loader/ThreadableLoader.h"
@@ skipping 16 matching lines @@
 FetchRequestData* FetchRequestData::create(
     ScriptState* scriptState,
     const WebServiceWorkerRequest& webRequest) {
   FetchRequestData* request = FetchRequestData::create();
   request->m_url = webRequest.url();
   request->m_method = webRequest.method();
   for (HTTPHeaderMap::const_iterator it = webRequest.headers().begin();
        it != webRequest.headers().end(); ++it)
     request->m_headerList->append(it->key, it->value);
   if (webRequest.blobDataHandle())
-    request->setBuffer(new BodyStreamBuffer(
+    request->setBuffer(BodyStreamBuffer::create(
         scriptState, new BlobBytesConsumer(scriptState->getExecutionContext(),
                                            webRequest.blobDataHandle())));
   request->setContext(webRequest.requestContext());
   request->setReferrer(
       Referrer(webRequest.referrerUrl().string(),
                static_cast<ReferrerPolicy>(webRequest.referrerPolicy())));
   request->setMode(webRequest.mode());
   request->setCredentials(webRequest.credentialsMode());
   request->setRedirect(webRequest.redirectMode());
   request->setMIMEType(request->m_headerList->extractMIMEType());
@@ skipping 29 matching lines @@
     m_buffer = new1;
     request->m_buffer = new2;
   }
   return request;
 }
 
 FetchRequestData* FetchRequestData::pass(ScriptState* scriptState) {
   FetchRequestData* request = FetchRequestData::cloneExceptBody();
   if (m_buffer) {
     request->m_buffer = m_buffer;
-    m_buffer = new BodyStreamBuffer(scriptState, BytesConsumer::createClosed());
+    m_buffer =
+        BodyStreamBuffer::create(scriptState, BytesConsumer::createClosed());
     m_buffer->closeAndLockAndDisturb();
   }
   return request;
 }
 
 FetchRequestData::~FetchRequestData() {}
 
 FetchRequestData::FetchRequestData()
     : m_method(HTTPNames::GET),
       m_headerList(FetchHeaderList::create()),
@@ skipping 12 matching lines @@
   if (m_credentials != WebURLRequest::FetchCredentialsModePassword)
     m_attachedCredential.clear();
 }
 
 DEFINE_TRACE(FetchRequestData) {
   visitor->trace(m_buffer);
   visitor->trace(m_headerList);
 }
 
 }  // namespace blink