Add ExtensionsTestBrowserContext class for test.

extensions/browser/image_loader_unittest.cc

Index: extensions/browser/image_loader_unittest.cc
diff --git a/extensions/browser/image_loader_unittest.cc b/extensions/browser/image_loader_unittest.cc
index 68b93b0f841640c63ffdfda73a6b7d9b1b90291e..73d173dc4ef23732d27c24ac00c3688e335e07ba 100644
--- a/extensions/browser/image_loader_unittest.cc
+++ b/extensions/browser/image_loader_unittest.cc
@@ -9,12 +9,12 @@
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
-#include "chrome/browser/chrome_notification_types.h"
 #include "chrome/common/chrome_paths.h"
-#include "content/public/browser/notification_service.h"
 #include "content/public/test/test_browser_thread.h"
 #include "extensions/browser/component_extension_resource_manager.h"
+#include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extensions_browser_client.h"
+#include "extensions/browser/extensions_test_browser_context.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_icon_set.h"
@@ -185,13 +185,10 @@ TEST_F(ImageLoaderTest, DeleteExtensionWhileWaitingForCache) {
   // The image isn't cached, so we should not have received notification.
   EXPECT_EQ(0, image_loaded_count());
 
+  extensions::ExtensionsTestBrowserContext browser_context;
   // Send out notification the extension was uninstalled.
-  UnloadedExtensionInfo details(extension.get(),
-                                UnloadedExtensionInfo::REASON_UNINSTALL);
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
-      content::NotificationService::AllSources(),
-      content::Details<UnloadedExtensionInfo>(&details));
+  extensions::ExtensionRegistry::Get(&browser_context)->TriggerOnUnloaded(
+      extension.get(), UnloadedExtensionInfo::REASON_UNINSTALL);
 
   // Chuck the extension, that way if anyone tries to access it we should crash
   // or get valgrind errors.