[wrapper-tracing] Untangle non-trivial mixin ctors

third_party/WebKit/Source/modules/fetch/Request.cpp

Index: third_party/WebKit/Source/modules/fetch/Request.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/Request.cpp b/third_party/WebKit/Source/modules/fetch/Request.cpp
index 2d1c4749a42597c05b247b6a1d6b107be67ec04a..af760ccd3074e035fc1f95055eb21a4de0317cf9 100644
--- a/third_party/WebKit/Source/modules/fetch/Request.cpp
+++ b/third_party/WebKit/Source/modules/fetch/Request.cpp
@@ -382,7 +382,7 @@ Request* Request::createRequestWithRequestOrString(
     //   contains no header named `Content-Type`, append
     //   `Content-Type`/|Content-Type| to |r|'s Headers object. Rethrow any
     //   exception."
-    temporaryBody = new BodyStreamBuffer(scriptState, std::move(init.body));
+    temporaryBody = BodyStreamBuffer::create(scriptState, std::move(init.body));
     if (!init.contentType.isEmpty() &&
         !r->getHeaders()->has(HTTPNames::Content_Type, exceptionState)) {
       r->getHeaders()->append(HTTPNames::Content_Type, init.contentType,
@@ -407,7 +407,7 @@ Request* Request::createRequestWithRequestOrString(
   if (inputRequest && inputRequest->bodyBuffer()) {
     // "Let |dummyStream| be an empty ReadableStream object."
     auto dummyStream =
-        new BodyStreamBuffer(scriptState, BytesConsumer::createClosed());
+        BodyStreamBuffer::create(scriptState, BytesConsumer::createClosed());
     // "Set |input|'s request's body to a new body whose stream is
     // |dummyStream|."
     inputRequest->m_request->setBuffer(dummyStream);
@@ -469,7 +469,8 @@ Request* Request::create(ScriptState* scriptState, FetchRequestData* request) {
 
 Request* Request::create(ScriptState* scriptState,
                          const WebServiceWorkerRequest& webRequest) {
-  return new Request(scriptState, webRequest);
+  FetchRequestData* request = FetchRequestData::create(scriptState, webRequest);
+  return new Request(scriptState, request);
 }
 
 Request::Request(ScriptState* scriptState,
@@ -486,10 +487,6 @@ Request::Request(ScriptState* scriptState, FetchRequestData* request)
   m_headers->setGuard(Headers::RequestGuard);
 }
 
-Request::Request(ScriptState* scriptState,
-                 const WebServiceWorkerRequest& request)
-    : Request(scriptState, FetchRequestData::create(scriptState, request)) {}
-
 String Request::method() const {
   // "The method attribute's getter must return request's method."
   return m_request->method();