Make URLRequestThrottlerManager a member of URLRequestContext.

net/url_request/url_request_context_storage.cc

Index: net/url_request/url_request_context_storage.cc
diff --git a/net/url_request/url_request_context_storage.cc b/net/url_request/url_request_context_storage.cc
index ed7950e613ec62c7ee3be6a217b40e68b4cde6ad..2a75db2f06e3fae334884285f29cb4d4f305a764 100644
--- a/net/url_request/url_request_context_storage.cc
+++ b/net/url_request/url_request_context_storage.cc
@@ -19,6 +19,7 @@
 #include "net/url_request/fraudulent_certificate_reporter.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_job_factory.h"
+#include "net/url_request/url_request_throttler_manager.h"
 
 namespace net {
 
@@ -115,4 +116,10 @@ void URLRequestContextStorage::set_job_factory(
   job_factory_.reset(job_factory);
 }
 
+void URLRequestContextStorage::set_throttler_manager(
+    URLRequestThrottlerManager* throttler_manager) {
+  context_->set_throttler_manager(throttler_manager);
+  throttler_manager_.reset(throttler_manager);
+}
+
 }  // namespace net