Stop refcounting URLRequestContext.

net/url_request/url_request_context.cc

Index: net/url_request/url_request_context.cc
diff --git a/net/url_request/url_request_context.cc b/net/url_request/url_request_context.cc
index 1076f001275f6d4382fb42820536c06179683737..df7cd678a79217d3670f883cf58a0b6e93c9912f 100644
--- a/net/url_request/url_request_context.cc
+++ b/net/url_request/url_request_context.cc
@@ -16,8 +16,7 @@
 namespace net {
 
 URLRequestContext::URLRequestContext()
-    : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)),
-      net_log_(NULL),
+    : net_log_(NULL),
       host_resolver_(NULL),
       cert_verifier_(NULL),
       server_bound_cert_service_(NULL),
@@ -35,6 +34,10 @@ URLRequestContext::URLRequestContext()
       url_requests_(new std::set<const URLRequest*>) {
 }
 
+URLRequestContext::~URLRequestContext() {
+  AssertNoURLRequests();
+}
+
 void URLRequestContext::CopyFrom(URLRequestContext* other) {
   // Copy URLRequestContext parameters.
   set_net_log(other->net_log());
@@ -81,8 +84,4 @@ void URLRequestContext::AssertNoURLRequests() const {
   }
 }
 
-URLRequestContext::~URLRequestContext() {
-  AssertNoURLRequests();
-}
-
 }  // namespace net