mv FetchTestingPlatformSupport to platform/loader/testing

third_party/WebKit/Source/platform/loader/fetch/FetchTestingPlatformSupport.cpp

-// Copyright 2017 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 "platform/loader/fetch/FetchTestingPlatformSupport.h"
-
-#include "platform/loader/fetch/MockFetchContext.h"
-#include "platform/network/ResourceError.h"
-#include "platform/testing/weburl_loader_mock_factory_impl.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebURL.h"
-#include "public/platform/WebURLLoader.h"
-#include "public/platform/WebURLLoaderMockFactory.h"
-#include <memory>
-
-namespace blink {
-
-FetchTestingPlatformSupport::FetchTestingPlatformSupport()
-    : m_urlLoaderMockFactory(new WebURLLoaderMockFactoryImpl(this)) {}
-
-FetchTestingPlatformSupport::~FetchTestingPlatformSupport() {
-  // Shutdowns WebURLLoaderMockFactory gracefully, serving all pending requests
-  // first, then flushing all registered URLs.
-  m_urlLoaderMockFactory->serveAsynchronousRequests();
-  m_urlLoaderMockFactory->unregisterAllURLsAndClearMemoryCache();
-}
-
-MockFetchContext* FetchTestingPlatformSupport::context() {
-  if (!m_context) {
-    m_context = MockFetchContext::create(
-        MockFetchContext::kShouldLoadNewResource,
-        currentThread()->scheduler()->loadingTaskRunner());
-  }
-  return m_context;
-}
-
-WebURLError FetchTestingPlatformSupport::cancelledError(
-    const WebURL& url) const {
-  return ResourceError(errorDomainBlinkInternal, -1, url.string(),
-                       "cancelledError for testing");
-}
-
-WebURLLoaderMockFactory*
-FetchTestingPlatformSupport::getURLLoaderMockFactory() {
-  return m_urlLoaderMockFactory.get();
-}
-
-WebURLLoader* FetchTestingPlatformSupport::createURLLoader() {
-  return m_urlLoaderMockFactory->createURLLoader(nullptr);
-}
-
-}  // namespace blink