Make URLRequestThrottlerManager a member of URLRequestContext.

net/proxy/proxy_script_fetcher_impl_unittest.cc

Index: net/proxy/proxy_script_fetcher_impl_unittest.cc
diff --git a/net/proxy/proxy_script_fetcher_impl_unittest.cc b/net/proxy/proxy_script_fetcher_impl_unittest.cc
index 8881161ab5873c95c38091c7e3dd357fe00be18c..9b701da6e5469a25c87a2be01c9036f56c74d8d3 100644
--- a/net/proxy/proxy_script_fetcher_impl_unittest.cc
+++ b/net/proxy/proxy_script_fetcher_impl_unittest.cc
@@ -23,6 +23,7 @@
 #include "net/url_request/url_request_context_storage.h"
 #include "net/url_request/url_request_job_factory.h"
 #include "net/url_request/url_request_test_util.h"
+#include "net/url_request/url_request_throttler_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
@@ -77,6 +78,7 @@ class RequestContext : public URLRequestContext {
     storage_.set_proxy_service(ProxyService::CreateFixed(no_proxy));
     storage_.set_ssl_config_service(new SSLConfigServiceDefaults);
     storage_.set_http_server_properties(new HttpServerPropertiesImpl);
+    storage_.set_throttler_manager(new URLRequestThrottlerManager);
 
     HttpNetworkSession::Params params;
     params.host_resolver = host_resolver();