Domain Reliability: Remove browsing data when requested.

chrome/test/base/testing_profile.cc

Index: chrome/test/base/testing_profile.cc
diff --git a/chrome/test/base/testing_profile.cc b/chrome/test/base/testing_profile.cc
index e9eda9dd9ef8780051907cd0dc68796f932848b6..2f890133cd85fd18d1cb26efccdf580b581e1611 100644
--- a/chrome/test/base/testing_profile.cc
+++ b/chrome/test/base/testing_profile.cc
@@ -894,6 +894,14 @@ void TestingProfile::ClearNetworkingHistorySince(
   }
 }
 
+void TestingProfile::ClearDomainReliabilityMonitor(
+    domain_reliability::DomainReliabilityClearMode mode,
+    const base::Closure& completion) {
+  if (!completion.is_null()) {
+    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, completion);
+  }
+}
+
 GURL TestingProfile::GetHomePage() {
   return GURL(chrome::kChromeUINewTabURL);
 }