AssociatedURLLoader shouldn't derive from WebURLLoader

content/test/mock_weburlloader.cc

Index: content/test/mock_weburlloader.cc
diff --git a/content/test/mock_weburlloader.cc b/content/test/mock_weburlloader.cc
deleted file mode 100644
index 951c587f2140d818d109eba3a2a4cab0b78c16c7..0000000000000000000000000000000000000000
--- a/content/test/mock_weburlloader.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright 2013 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 "content/test/mock_weburlloader.h"
-
-#include "third_party/WebKit/public/platform/WebData.h"
-#include "third_party/WebKit/public/platform/WebURLError.h"
-#include "third_party/WebKit/public/platform/WebURLRequest.h"
-#include "third_party/WebKit/public/platform/WebURLResponse.h"
-
-namespace content {
-
-MockWebURLLoader::MockWebURLLoader() {}
-
-MockWebURLLoader::~MockWebURLLoader() {}
-
-}  // namespace content