Add a SafeSearch preference, policy and implementation.

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

Index: chrome/browser/extensions/api/web_request/web_request_api_unittest.cc
diff --git a/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc b/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc
index a97bacaab65dc5650a0012375c0d72b55b4ac4df..ade424ab1a18283ad02ac00f1221499358580396 100644
--- a/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc
@@ -163,7 +163,7 @@ class ExtensionWebRequestTest : public testing::Test {
     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();
@@ -707,7 +707,7 @@ class ExtensionWebRequestHeaderModificationTest :
     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");