Count Response construction with ReadableStream

third_party/WebKit/Source/modules/fetch/Response.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/Response.h"
 
+#include <memory>
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ArrayBufferView.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8Blob.h"
 #include "bindings/core/v8/V8FormData.h"
 #include "bindings/core/v8/V8HiddenValue.h"
 #include "bindings/core/v8/V8URLSearchParams.h"
 #include "bindings/modules/v8/ByteStringSequenceSequenceOrDictionaryOrHeaders.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/URLSearchParams.h"
 #include "core/fileapi/Blob.h"
+#include "core/frame/UseCounter.h"
 #include "core/html/FormData.h"
 #include "core/streams/ReadableStreamOperations.h"
 #include "modules/fetch/BlobBytesConsumer.h"
 #include "modules/fetch/BodyStreamBuffer.h"
 #include "modules/fetch/FormDataBytesConsumer.h"
 #include "modules/fetch/ResponseInit.h"
 #include "platform/loader/fetch/FetchUtils.h"
 #include "platform/network/EncodedFormData.h"
 #include "platform/network/HTTPHeaderMap.h"
 #include "platform/network/NetworkUtils.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerResponse.h"
 #include "wtf/RefPtr.h"
-#include <memory>
 
 namespace blink {
 
 namespace {
 
 FetchResponseData* createFetchResponseDataFromWebResponse(
     ScriptState* scriptState,
     const WebServiceWorkerResponse& webResponse) {
   FetchResponseData* response = nullptr;
   if (webResponse.status() > 0)
@@ skipping 120 matching lines @@
         new FormDataBytesConsumer(executionContext, formData.release()));
   } else if (V8URLSearchParams::hasInstance(body, isolate)) {
     RefPtr<EncodedFormData> formData =
         V8URLSearchParams::toImpl(body.As<v8::Object>())->toEncodedFormData();
     bodyBuffer = new BodyStreamBuffer(
         scriptState,
         new FormDataBytesConsumer(executionContext, formData.release()));
     contentType = "application/x-www-form-urlencoded;charset=UTF-8";
   } else if (ReadableStreamOperations::isReadableStream(scriptState,
                                                         bodyValue)) {
+    UseCounter::count(executionContext,
+                      UseCounter::FetchResponseConstructionWithStream);
     bodyBuffer = new BodyStreamBuffer(scriptState, bodyValue);
   } else {
     String string = toUSVString(isolate, body, exceptionState);
     if (exceptionState.hadException())
       return nullptr;
     bodyBuffer =
         new BodyStreamBuffer(scriptState, new FormDataBytesConsumer(string));
     contentType = "text/plain;charset=UTF-8";
   }
   return create(scriptState, bodyBuffer, contentType, init, exceptionState);
@@ skipping 272 matching lines @@
       V8HiddenValue::internalBodyBuffer(scriptState->isolate()), bodyBuffer);
 }
 
 DEFINE_TRACE(Response) {
   Body::trace(visitor);
   visitor->trace(m_response);
   visitor->trace(m_headers);
 }
 
 }  // namespace blink