Enable the VariationsService on official builds when --variations-service-url is provided.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index e31b5ff81b17713c671597e47d4840d76228e623..a7102836e520d63f830469d807799b572c0e6c4b 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -415,10 +415,8 @@ net::URLRequestContextGetter* BrowserProcessImpl::system_request_context() {
 
 chrome_variations::VariationsService* BrowserProcessImpl::variations_service() {
   DCHECK(CalledOnValidThread());
-#if defined(GOOGLE_CHROME_BUILD) && !defined(OS_ANDROID)
   if (!variations_service_.get())
-    variations_service_.reset(new chrome_variations::VariationsService());
-#endif
+    variations_service_.reset(chrome_variations::VariationsService::Create());
   return variations_service_.get();
 }