Run ProxyEnd2End tests (without proxy) for inproc transport

test/cpp/end2end/end2end_test.cc

@@ -1407,6 +1407,10 @@ TEST_P(ProxyEnd2endTest, HugeResponse) {
 }
 
 TEST_P(ProxyEnd2endTest, Peer) {
+  // Peer is not meaningful for inproc
+  if (GetParam().inproc) {
+    return;
+  }
   ResetStub();
   EchoRequest request;
   EchoResponse response;
@@ -1775,11 +1779,10 @@ std::vector<TestScenario> CreateTestScenarios(bool use_proxy,
     credentials_types.push_back(kInsecureCredentialsType);
   }
   GPR_ASSERT(!credentials_types.empty());
-  for (auto it = credentials_types.begin(); it != credentials_types.end();
-       ++it) {
-    scenarios.emplace_back(false, false, *it);
+  for (const auto& cred : credentials_types) {
+    scenarios.emplace_back(false, false, cred);
     if (use_proxy) {
-      scenarios.emplace_back(true, false, *it);
+      scenarios.emplace_back(true, false, cred);
     }
   }
   if (test_inproc && insec_ok()) {
@@ -1798,7 +1801,7 @@ INSTANTIATE_TEST_CASE_P(End2endServerTryCancel, End2endServerTryCancelTest,
 
 INSTANTIATE_TEST_CASE_P(ProxyEnd2end, ProxyEnd2endTest,
                         ::testing::ValuesIn(CreateTestScenarios(true, true,
-                                                                true, false)));
+                                                                true, true)));
 
 INSTANTIATE_TEST_CASE_P(SecureEnd2end, SecureEnd2endTest,
                         ::testing::ValuesIn(CreateTestScenarios(false, false,