Exempt default apps from external-extension alerts.

chrome/browser/extensions/external_policy_extension_loader_unittest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/values.h"
 #include "base/version.h"
@@ skipping 51 matching lines @@
     // so it should be emptied by the end.
     remaining_extensions = policy_validlist;
     provider_->VisitRegisteredExtension();
     EXPECT_EQ(0u, remaining_extensions->GetSize());
   }
 
   virtual void OnExternalExtensionFileFound(const std::string& id,
                                             const Version* version,
                                             const FilePath& path,
                                             Extension::Location unused,
-                                            int unused2) {
+                                            int unused2,
+                                            bool unused3) {
     ADD_FAILURE() << "There should be no external extensions from files.";
   }
 
   virtual void OnExternalExtensionUpdateUrlFound(
       const std::string& id, const GURL& update_url,
       Extension::Location location) {
     // Extension has the correct location.
     EXPECT_EQ(Extension::EXTERNAL_POLICY_DOWNLOAD, location);
 
     // Provider returns the correct location when asked.
@@ skipping 59 matching lines @@
       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;http#//www.example.com/crx"));
   forced_extensions.Append(Value::CreateStringValue(
       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"));
   forced_extensions.Append(Value::CreateStringValue(
       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahttp#//www.example.com/crx"));
 
   MockExternalPolicyExtensionProviderVisitor mv;
   std::set<std::string> empty;
   mv.Visit(&forced_extensions, &valid_extensions, empty);
 }