Fix PingLoaderTest crashing the next test

third_party/WebKit/Source/core/loader/PingLoaderTest.cpp

 // Copyright 2016 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 "core/loader/PingLoader.h"
 
 #include "core/frame/LocalFrame.h"
 #include "core/loader/EmptyClients.h"
 #include "core/loader/FrameLoader.h"
 #include "core/testing/DummyPageHolder.h"
@@ skipping 46 matching lines @@
     KURL destinationURL(ParsedURLString, "http://navigation.destination");
     URLTestHelpers::registerMockedURLLoad(
         pingURL, testing::webTestDataPath("bar.html"), "text/html");
     PingLoader::sendLinkAuditPing(&m_pageHolder->frame(), pingURL,
                                   destinationURL);
     const ResourceRequest& pingRequest = m_client->pingRequest();
     if (!pingRequest.isNull()) {
       EXPECT_EQ(destinationURL.getString(),
                 pingRequest.httpHeaderField("Ping-To"));
     }
+    // Serve the ping request, since it will otherwise bleed in to the next
+    // test, and once begun there is no way to cancel it directly.
+    Platform::current()->getURLLoaderMockFactory()->serveAsynchronousRequests();
     return pingRequest;
   }
 
  private:
   Persistent<PingFrameLoaderClient> m_client;
   std::unique_ptr<DummyPageHolder> m_pageHolder;
 };
 
 TEST_F(PingLoaderTest, HTTPSToHTTPS) {
   KURL pingURL(ParsedURLString, "https://localhost/bar.html");
@@ skipping 17 matching lines @@
 TEST_F(PingLoaderTest, NonHTTPPingTarget) {
   setDocumentURL(KURL(ParsedURLString, "http://127.0.0.1:8000/foo.html"));
   const ResourceRequest& pingRequest =
       pingAndGetRequest(KURL(ParsedURLString, "ftp://localhost/bar.html"));
   ASSERT_TRUE(pingRequest.isNull());
 }
 
 }  // namespace
 
 }  // namespace blink