Change NotifyAppList*() functions into observers on a ProfileKeyedService.

chrome/browser/extensions/install_tracker.h

Index: chrome/browser/extensions/install_tracker.h
diff --git a/chrome/browser/extensions/install_tracker.h b/chrome/browser/extensions/install_tracker.h
new file mode 100644
index 0000000000000000000000000000000000000000..2eaa4abd21d1f75b5730b8f0afdff9d8969aedb0
--- /dev/null
+++ b/chrome/browser/extensions/install_tracker.h
@@ -0,0 +1,57 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.

[tfarina, 2013/02/25 19:43:18]

no (c)

[koz (OOO until 15th September), 2013/02/25 23:35:19]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_INSTALL_TRACKER_H_
+#define CHROME_BROWSER_EXTENSIONS_INSTALL_TRACKER_H_
+
+#include "base/observer_list.h"
+#include "chrome/browser/profiles/profile_keyed_service.h"
+#include "ui/gfx/image/image_skia.h"

[tfarina, 2013/02/25 19:43:18]

forward declare this.

[koz (OOO until 15th September), 2013/02/25 23:35:19]

Done.

+
+namespace extensions {
+
+class InstallObserver {

[tfarina, 2013/02/25 19:43:18]

please, put this into c/b/e/install_observer.h

[koz (OOO until 15th September), 2013/02/25 23:35:19]

Done.

+ public:
+  virtual void OnBeginExtensionInstall(
+      const std::string& extension_id,
+      const std::string& extension_name,
+      const gfx::ImageSkia& installing_icon,
+      bool is_app) = 0;
+
+  virtual void OnDownloadProgress(const std::string& extension_id,
+                                  int percent_downloaded) = 0;
+
+  virtual void OnInstallFailure(const std::string& extension_id) = 0;
+
+ protected:
+  virtual ~InstallObserver() {}
+};
+
+class InstallTracker : public ProfileKeyedService {
+ public:
+  explicit InstallTracker();

[tfarina, 2013/02/25 19:43:18]

no explicit

[koz (OOO until 15th September), 2013/02/25 23:35:19]

Done.

+  virtual ~InstallTracker();
+
+  // ProfileKeyedService implementation.

[tfarina, 2013/02/25 19:43:18]

I don't think this is an implementation of ProfileKeyedService. PKS has only
Shutdown method.

[koz (OOO until 15th September), 2013/02/25 23:35:19]

Done.

+  void AddObserver(InstallObserver* observer);
+  void RemoveObserver(InstallObserver* observer);
+
+  void OnBeginExtensionInstall(

[tfarina, 2013/02/25 19:43:18]

why these three methods have the same names of InstallObserver?

[koz (OOO until 15th September), 2013/02/25 23:35:19]

This class acts as a broadcaster - it gets notified, then it notifies everyone
listening to it, so I think it's reasonable to have these functions have the
same name as the listeners.

+      const std::string& extension_id,
+      const std::string& extension_name,
+      const gfx::ImageSkia& installing_icon,
+      bool is_app);
+  void OnDownloadProgress(const std::string& extension_id,
+                                  int percent_downloaded);

[tfarina, 2013/02/25 19:43:18]

wrong indent

[koz (OOO until 15th September), 2013/02/25 23:35:19]

Done.

+  void OnInstallFailure(const std::string& extension_id);
+
+ private:
+  ObserverList<InstallObserver> observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(InstallTracker);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_INSTALL_TRACKER_H_