Send traffic-management headers from extension updater.

components/update_client/update_query_params.cc

Index: components/update_client/update_query_params.cc
diff --git a/components/update_client/update_query_params.cc b/components/update_client/update_query_params.cc
index 5cd745b1198d7ae0ad408c0407b757a69e13642c..5a81a94b775bf071503ca9ec977f50c8ebcb83d2 100644
--- a/components/update_client/update_query_params.cc
+++ b/components/update_client/update_query_params.cc
@@ -8,6 +8,7 @@
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "components/update_client/update_query_params_delegate.h"
+#include "components/version_info/version_info.h"
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
@@ -130,6 +131,11 @@ const char* UpdateQueryParams::GetNaclArch() {
 }
 
 // static
+std::string UpdateQueryParams::GetProdVersion() {
+  return version_info::GetVersionNumber();
+}
+
+// static
 void UpdateQueryParams::SetDelegate(UpdateQueryParamsDelegate* delegate) {
   DCHECK(!g_delegate || !delegate || (delegate == g_delegate));
   g_delegate = delegate;