Get rid of url_request_tracking.*. The only other place that used it other than ResourceDispatch...

chrome/test/plugin/plugin_test.cpp

 // Copyright (c) 2011 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.
 
 // Tests for the top plugins to catch regressions in our plugin host code, as
 // well as in the out of process code.  Currently this tests:
 //  Flash
 //  Real
 //  QuickTime
 //  Windows Media Player
@@ skipping 232 matching lines @@
       public testing::Test {
  public:
   PluginInstallerDownloadTest()
       : success_(false),
         download_helper_(NULL) {}
   ~PluginInstallerDownloadTest() {}
 
   void Start() {
     initial_download_path_ = PluginTest::GetTestUrl("flash.html", false);
     download_helper_ = new PluginDownloadUrlHelper(
-        initial_download_path_.spec(), base::GetCurrentProcId(), NULL,
+        initial_download_path_.spec(), NULL,
         static_cast<PluginDownloadUrlHelper::DownloadDelegate*>(this));
     download_helper_->InitiateDownload(new TestURLRequestContext);
 
     MessageLoop::current()->PostDelayedTask(
         FROM_HERE, new MessageLoop::QuitTask,
         TestTimeouts::action_max_timeout_ms());
   }
 
   virtual void OnDownloadCompleted(const FilePath& download_path,
                                    bool success) {
@@ skipping 27 matching lines @@
 TEST_F(PluginInstallerDownloadTest, PluginInstallerDownloadPathTest) {
   MessageLoop loop(MessageLoop::TYPE_IO);
   Start();
   loop.Run();
 
   EXPECT_TRUE(success());
   EXPECT_TRUE(initial_download_path().BaseName().value() ==
               final_download_path().BaseName().value());
 }
 #endif  // defined(OS_WIN)