Domain Reliability: Remove browsing data when requested.

components/domain_reliability/context.h

Index: components/domain_reliability/context.h
diff --git a/components/domain_reliability/context.h b/components/domain_reliability/context.h
index c9809379e6599429f6d8e4eecca0320e1613b0fb..16a3fe457977bfc5d9891a0cdb86f1720ab741c8 100644
--- a/components/domain_reliability/context.h
+++ b/components/domain_reliability/context.h
@@ -43,6 +43,9 @@ class DOMAIN_RELIABILITY_EXPORT DomainReliabilityContext {
   // but will increment one of the request counters in any case.
   void OnBeacon(const GURL& url, const DomainReliabilityBeacon& beacon);
 
+  // Called to clear browsing data, since beacons are like browsing history.
+  void ClearBeacons();
+
   void GetQueuedDataForTesting(
       size_t resource_index,
       std::vector<DomainReliabilityBeacon>* beacons_out,