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..55e5e18a859d3a62e8264a88098998b3f2a2f754 100644
--- a/chrome/browser/domain_reliability/service_factory.h
+++ b/chrome/browser/domain_reliability/service_factory.h
@@ -36,6 +36,8 @@ class DomainReliabilityServiceFactory
   virtual KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const OVERRIDE;
 
+  bool reporting_enabled_;

[mmenke, 2014/09/03 14:59:46]

I don't think this is needed, either, is it?  We can just grab it in
DomainReliabilityServiceFactory::BuildServiceInstanceFor.

+
   DISALLOW_COPY_AND_ASSIGN(DomainReliabilityServiceFactory);
 };