Add enable_reporting to fix size regression in Cronet.

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 7003bb9ee5315f86e179a5b8efb5891ff39d5de4..226b7e8ce6964147a2c9b3538e80f6b4bd0954b1 100644
--- a/net/url_request/url_request_context_storage.cc
+++ b/net/url_request/url_request_context_storage.cc
@@ -20,13 +20,16 @@
 #include "net/http/http_transaction_factory.h"
 #include "net/log/net_log.h"
 #include "net/proxy/proxy_service.h"
-#include "net/reporting/reporting_service.h"
 #include "net/ssl/channel_id_service.h"
 #include "net/url_request/http_user_agent_settings.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"
 
+#if BUILDFLAG(ENABLE_REPORTING)
+#include "net/reporting/reporting_service.h"
+#endif  // BUILDFLAG(ENABLE_REPORTING)
+
 namespace net {
 
 URLRequestContextStorage::URLRequestContextStorage(URLRequestContext* context)
@@ -153,10 +156,12 @@ void URLRequestContextStorage::set_sdch_manager(
   sdch_manager_ = std::move(sdch_manager);
 }
 
+#if BUILDFLAG(ENABLE_REPORTING)
 void URLRequestContextStorage::set_reporting_service(
     std::unique_ptr<ReportingService> reporting_service) {
   context_->set_reporting_service(reporting_service.get());
   reporting_service_ = std::move(reporting_service);
 }
+#endif  // BUILDFLAG(ENABLE_REPORTING)
 
 }  // namespace net