Cap chrome.mdns.onServiceList listeners per extension at 10

chrome/browser/extensions/api/mdns/mdns_apitest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "chrome/browser/extensions/api/mdns/mdns_api.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/common/extensions/api/mdns.h"
 #include "extensions/common/switches.h"
@@ skipping 124 matching lines @@
   DnsSdRegistry::DnsSdServiceList services;
 
   extensions::DnsSdService service;
   service.service_name = service_type;
   services.push_back(service);
 
   dns_sd_registry_->DispatchMDnsEvent(service_type, services);
   dns_sd_registry_->DispatchMDnsEvent(test_service_type, services);
   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
+
+// TODO(justinlin): Win Dbg has a workaround that makes RunExtensionSubtest
+// always return true without actually running the test. Remove when fixed.
+#if defined(OS_WIN) && !defined(NDEBUG)
+#define MAYBE_RegisterTooManyListeners DISABLED_RegisterTooManyListeners
+#else
+#define MAYBE_RegisterTooManyListeners RegisterTooManyListeners
+#endif
+// Test loading extension and registering multiple listeners.
+IN_PROC_BROWSER_TEST_F(MDnsAPITest, MAYBE_RegisterTooManyListeners) {
+  SetUpTestDnsSdRegistry();
+
+  EXPECT_CALL(*dns_sd_registry_, RegisterDnsSdListener(A<std::string>()))
+      .Times(10);
+  EXPECT_CALL(*dns_sd_registry_, UnregisterDnsSdListener(A<std::string>()))
+      .Times(10);
+  EXPECT_CALL(*dns_sd_registry_,
+              RemoveObserver(A<extensions::DnsSdRegistry::DnsSdObserver*>()))
+      .Times(1);
+
+  EXPECT_TRUE(RunPlatformAppTest("mdns/api-packaged-apps"))
+      << message_;
+}