Observe adding external extensions via windows registry.

chrome/browser/extensions/external_policy_loader_unittest.cc

 // Copyright (c) 2012 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 <set>
 #include <string>
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 52 matching lines @@
         Manifest::EXTERNAL_POLICY_DOWNLOAD,
         Extension::NO_FLAGS));
 
     // Extensions will be removed from this list as they visited,
     // so it should be emptied by the end.
     expected_extensions_ = expected_extensions;
     provider_->VisitRegisteredExtension();
     EXPECT_TRUE(expected_extensions_.empty());
   }
 
-  bool OnExternalExtensionFileFound(const std::string& id,
-                                    const Version* version,
-                                    const base::FilePath& path,
-                                    Manifest::Location unused,
-                                    int unused2,
-                                    bool unused3,
-                                    bool unused4) override {
+  bool OnExternalExtensionFileFound(
+      extensions::ExternalExtensionInstallInfoFile* info) override {
     ADD_FAILURE() << "There should be no external extensions from files.";
     return false;
   }
 
-  bool OnExternalExtensionUpdateUrlFound(const std::string& id,
-                                         const std::string& install_parameter,
-                                         const GURL& update_url,
-                                         Manifest::Location location,
-                                         int unused1,
-                                         bool unused2) override {
+  bool OnExternalExtensionUpdateUrlFound(
+      extensions::ExternalExtensionInstallInfoUpdateUrl* info,
+      bool is_initial_load) override {
     // Extension has the correct location.
-    EXPECT_EQ(Manifest::EXTERNAL_POLICY_DOWNLOAD, location);
+    EXPECT_EQ(Manifest::EXTERNAL_POLICY_DOWNLOAD, info->download_location);
 
     // Provider returns the correct location when asked.
     Manifest::Location location1;
     scoped_ptr<Version> version1;
-    provider_->GetExtensionDetails(id, &location1, &version1);
+    provider_->GetExtensionDetails(info->extension_id, &location1, &version1);
     EXPECT_EQ(Manifest::EXTERNAL_POLICY_DOWNLOAD, location1);
     EXPECT_FALSE(version1.get());
 
     // Remove the extension from our list.
-    EXPECT_EQ(1U, expected_extensions_.erase(id));
+    EXPECT_EQ(1U, expected_extensions_.erase(info->extension_id));
     return true;
   }
 
   void OnExternalProviderReady(
       const ExternalProviderInterface* provider) override {
     EXPECT_EQ(provider, provider_.get());
     EXPECT_TRUE(provider->IsReady());
   }
 
+  void OnExternalProviderUpdateComplete(
+      const ExternalProviderInterface* provider,
+      const ScopedVector<ExternalExtensionInstallInfoUpdateUrl>&
+          update_url_extensions,
+      const ScopedVector<ExternalExtensionInstallInfoFile>& file_extensions,
+      const std::set<std::string>& removed_extensions) override {
+    ADD_FAILURE() << "Only win registry provider is expected to call this.";
+  }
+
  private:
   std::set<std::string> expected_extensions_;
 
   scoped_ptr<TestingProfile> profile_;
 
   scoped_ptr<ExternalProviderImpl> provider_;
 
   DISALLOW_COPY_AND_ASSIGN(MockExternalPolicyProviderVisitor);
 };
 
@@ skipping 26 matching lines @@
   forced_extensions.SetString("invalid", "http://www.example.com/crx");
   forced_extensions.SetString("dddddddddddddddddddddddddddddddd",
                               std::string());
   forced_extensions.SetString("invalid", "bad");
 
   MockExternalPolicyProviderVisitor mv;
   mv.Visit(forced_extensions, expected_extensions);
 }
 
 }  // namespace extensions