Domain Reliability: Don't create Service if metrics reporting disabled

chrome/browser/domain_reliability/service_factory.h

Index: chrome/browser/domain_reliability/service_factory.h
diff --git a/chrome/browser/domain_reliability/service_factory.h b/chrome/browser/domain_reliability/service_factory.h
index dcf460a8d3b58469211fa1a6056731500064f9c0..019c674fbc3aaa56e1b819016565f08e8691c936 100644
--- a/chrome/browser/domain_reliability/service_factory.h
+++ b/chrome/browser/domain_reliability/service_factory.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_DOMAIN_RELIABILITY_SERVICE_FACTORY_H_
 
 #include "base/memory/singleton.h"
+#include "base/prefs/pref_member.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
 namespace content {
@@ -36,6 +37,8 @@ class DomainReliabilityServiceFactory
   virtual KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const OVERRIDE;
 
+  BooleanPrefMember reporting_pref_;
+
   DISALLOW_COPY_AND_ASSIGN(DomainReliabilityServiceFactory);
 };