Add a SafeSearch preference, policy and implementation.

chrome/browser/extensions/api/web_request/web_request_api_unittest.cc

 // Copyright (c) 2012 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 <map>
 #include <queue>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/file_path.h"
@@ skipping 145 matching lines @@
         io_thread_(content::BrowserThread::IO, &message_loop_) {}
 
  protected:
   virtual void SetUp() OVERRIDE {
     event_router_ = new extensions::EventRouterForwarder();
     enable_referrers_.Init(
         prefs::kEnableReferrers, profile_.GetTestingPrefService(), NULL);
     network_delegate_.reset(new ChromeNetworkDelegate(
         event_router_.get(), NULL, NULL, NULL, &profile_,
         CookieSettings::Factory::GetForProfile(&profile_), &enable_referrers_,
-        NULL, NULL));
+        NULL, NULL, NULL));
     context_.reset(new TestURLRequestContext(true));
     context_->set_network_delegate(network_delegate_.get());
     context_->Init();
   }
 
   // Fires a URLRequest with the specified |method|, |content_type| and three
   // elements of upload data: bytes_1, a dummy empty file, bytes_2.
   void FireURLRequestWithData(const std::string& method,
                               const char* content_type,
                               const std::vector<char>& bytes_1,
@@ skipping 522 matching lines @@
         io_thread_(content::BrowserThread::IO, &message_loop_) {}
 
  protected:
   virtual void SetUp() {
     event_router_ = new extensions::EventRouterForwarder();
     enable_referrers_.Init(
         prefs::kEnableReferrers, profile_.GetTestingPrefService(), NULL);
     network_delegate_.reset(new ChromeNetworkDelegate(
         event_router_.get(), NULL, NULL, NULL, &profile_,
         CookieSettings::Factory::GetForProfile(&profile_), &enable_referrers_,
-        NULL, NULL));
+        NULL, NULL, NULL));
     context_.reset(new TestURLRequestContext(true));
     host_resolver_.reset(new net::MockHostResolver());
     host_resolver_->rules()->AddSimulatedFailure("doesnotexist");
     context_->set_host_resolver(host_resolver_.get());
     context_->set_network_delegate(network_delegate_.get());
     context_->Init();
   }
 
   MessageLoopForIO message_loop_;
   content::TestBrowserThread ui_thread_;
@@ skipping 1346 matching lines @@
   credentials_set = MergeOnAuthRequiredResponses(
         deltas, &auth3, &conflicting_extensions, &net_log);
   EXPECT_TRUE(credentials_set);
   EXPECT_FALSE(auth3.Empty());
   EXPECT_EQ(username, auth1.username());
   EXPECT_EQ(password, auth1.password());
   EXPECT_EQ(1u, conflicting_extensions.size());
   EXPECT_TRUE(ContainsKey(conflicting_extensions, "extid2"));
   EXPECT_EQ(3u, capturing_net_log.GetSize());
 }