Adds support for the DHCP portion of the WPAD (proxy auto-discovery) protocol.

net/proxy/dhcp_proxy_script_fetcher_factory_unittest.cc

 // 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.
 
 #include "net/proxy/dhcp_proxy_script_fetcher.h"
 #include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 namespace {
 
 TEST(DhcpProxyScriptFetcherFactoryTest, DoNothingWhenDisabled) {
   DhcpProxyScriptFetcherFactory factory;
-  // Non-do-nothing fetchers would DCHECK on the NULL pointer.
-  DhcpProxyScriptFetcher* fetcher = factory.Create(NULL);
-  ASSERT_TRUE(fetcher);
+  scoped_ptr<DhcpProxyScriptFetcher> fetcher(factory.Create(NULL));
   EXPECT_EQ("", fetcher->GetFetcherName());
 }
 
 #if defined(OS_WIN)
 TEST(DhcpProxyScriptFetcherFactoryTest, WindowsFetcherOnWindows) {
   DhcpProxyScriptFetcherFactory factory;
   factory.set_enabled(true);
 
   scoped_refptr<TestURLRequestContext> context(new TestURLRequestContext());
-  DhcpProxyScriptFetcher* fetcher = factory.Create(context);
-  ASSERT_TRUE(fetcher);
+  scoped_ptr<DhcpProxyScriptFetcher> fetcher(factory.Create(context));
   EXPECT_EQ("win", fetcher->GetFetcherName());
 }
 #endif  // defined(OS_WIN)
 
 TEST(DhcpProxyScriptFetcherFactoryTest, IsSupported) {
 #if defined(OS_WIN)
   ASSERT_TRUE(DhcpProxyScriptFetcherFactory::IsSupported());
 #else
   ASSERT_FALSE(DhcpProxyScriptFetcherFactory::IsSupported());
 #endif  // defined(OS_WIN)
 }
 
 TEST(DhcpProxyScriptFetcherFactoryTest, SetEnabled) {
   DhcpProxyScriptFetcherFactory factory;
   EXPECT_FALSE(factory.enabled());
 
   factory.set_enabled(false);
   EXPECT_FALSE(factory.enabled());
 
   factory.set_enabled(true);
 #if defined(OS_WIN)
   EXPECT_TRUE(factory.enabled());
 #else
   EXPECT_FALSE(factory.enabled());
 #endif  // defined(OS_WIN)
 }
 
 }  // namespace
 }  // namespace net