Domain Reliability: Don't upload when metrics reporting is off.

components/domain_reliability/test_util.h

Index: components/domain_reliability/test_util.h
diff --git a/components/domain_reliability/test_util.h b/components/domain_reliability/test_util.h
index a5367e9465366111ca724ecac87a28fbb7e12224..a53664d4b66b206bf0bccbe2aa6d671ff68fbef3 100644
--- a/components/domain_reliability/test_util.h
+++ b/components/domain_reliability/test_util.h
@@ -48,13 +48,18 @@ class MockUploader : public DomainReliabilityUploader {
 
   virtual ~MockUploader();
 
+  virtual bool discard_uploads() const;
+
   // DomainReliabilityUploader implementation:
   virtual void UploadReport(const std::string& report_json,
                             const GURL& upload_url,
                             const UploadCallback& callback) OVERRIDE;
 
+  virtual void set_discard_uploads(bool discard_uploads) OVERRIDE;
+
  private:
   UploadRequestCallback callback_;
+  bool discard_uploads_;
 };
 
 class MockTime : public MockableTime {