Remove InstallTracker's extension load, unload observer

extensions/browser/extension_registry_unittest.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 "extensions/browser/extension_registry.h"
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_util.h"
@@ skipping 56 matching lines @@
       bool from_ephemeral,
       const std::string& old_name) OVERRIDE {
     installed_.push_back(extension);
   }
 
   virtual void OnExtensionUninstalled(content::BrowserContext* browser_context,
                                       const Extension* extension) OVERRIDE {
     uninstalled_.push_back(extension);
   }
 
+  virtual void OnShutdown(extensions::ExtensionRegistry* registry) OVERRIDE {
+    Reset();
+  }
+
   ExtensionList loaded_;
   ExtensionList unloaded_;
   ExtensionList installed_;
   ExtensionList uninstalled_;
 };
 
 TEST_F(ExtensionRegistryTest, FillAndClearRegistry) {
   ExtensionRegistry registry(NULL);
   scoped_refptr<Extension> extension1 = test_util::CreateExtensionWithID("id1");
   scoped_refptr<Extension> extension2 = test_util::CreateExtensionWithID("id2");
@@ skipping 158 matching lines @@
       extension, false, false, base::EmptyString());
   EXPECT_TRUE(HasSingleExtension(observer.installed(), extension.get()));
 
   registry.AddEnabled(extension);
   registry.TriggerOnLoaded(extension);
 
   registry.TriggerOnWillBeInstalled(extension, true, false, "foo");
 
   EXPECT_TRUE(HasSingleExtension(observer.loaded(), extension.get()));
   EXPECT_TRUE(observer.unloaded().empty());
-  observer.Reset();
+  registry.Shutdown();
 
   registry.RemoveEnabled(extension->id());
   registry.TriggerOnUnloaded(extension, UnloadedExtensionInfo::REASON_DISABLE);
 
   EXPECT_TRUE(observer.loaded().empty());
   EXPECT_TRUE(HasSingleExtension(observer.unloaded(), extension.get()));
-  observer.Reset();
+  registry.Shutdown();
 
   registry.TriggerOnUninstalled(extension);
   EXPECT_TRUE(observer.installed().empty());
   EXPECT_TRUE(HasSingleExtension(observer.uninstalled(), extension.get()));
 
   registry.RemoveObserver(&observer);
 }
 
 }  // namespace
 }  // namespace extensions