Preventing our default handlers for ChromeOS to show up or confuse the user

chrome/browser/custom_handlers/protocol_handler_registry_unittest.cc

Index: chrome/browser/custom_handlers/protocol_handler_registry_unittest.cc
diff --git a/chrome/browser/custom_handlers/protocol_handler_registry_unittest.cc b/chrome/browser/custom_handlers/protocol_handler_registry_unittest.cc
index f5afb11c38b3c691e955ca17ad5a689ec77d3f19..65699f7f994507ccade4557ae32aac93c533f4c5 100644
--- a/chrome/browser/custom_handlers/protocol_handler_registry_unittest.cc
+++ b/chrome/browser/custom_handlers/protocol_handler_registry_unittest.cc
@@ -229,6 +229,16 @@ class ProtocolHandlerRegistryTest : public testing::Test {
     registry_->Load();
   }
 
+  void ReloadProtocolHandlerRegistryAndInstallDefaultHandler() {
+    delegate_ = new FakeDelegate();
+    registry_->Finalize();
+    registry_ = NULL;
+    registry_ = new ProtocolHandlerRegistry(profile(), delegate());
+    registry_->AddDefaultHandler(CreateProtocolHandler(
+        "test", GURL("http://test.com/%s"), "Test"));
+    registry_->Load();
+  }
+
   virtual void SetUp() {
     ui_message_loop_.reset(new MessageLoopForUI());
     ui_thread_.reset(new content::TestBrowserThread(BrowserThread::UI,
@@ -796,3 +806,10 @@ TEST_F(ProtocolHandlerRegistryTest, TestIsSameOrigin) {
   ASSERT_EQ(ph3.url().GetOrigin() == ph2.url().GetOrigin(),
       ph3.IsSameOrigin(ph2));
 }
+
+TEST_F(ProtocolHandlerRegistryTest, TestInstallDefaultHandler) {
+  ReloadProtocolHandlerRegistryAndInstallDefaultHandler();
+  std::vector<std::string> protocols;
+  registry()->GetRegisteredProtocols(&protocols);
+  ASSERT_EQ(static_cast<size_t>(1), protocols.size());
+}