Mac: Save/restore task manager window pos and size.

chrome/browser/cocoa/window_size_autosaver.h

+// Copyright (c) 2010 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.
+
+#ifndef CHROME_BROWSER_COCOA_WINDOW_SIZE_AUTOSAVER_H_
+#define CHROME_BROWSER_COCOA_WINDOW_SIZE_AUTOSAVER_H_
+
+class PrefService;
+@class NSWindow;
+
+enum WindowSizeAutosaverState {
+
+  // Autosave only the window's bottom-right corner.
+  kSaveWindowPos,
+
+  // Autosave the whole window rect, i.e. both position and size.
+  kSaveWindowRect,
+};
+
+// WindowSizeAutosaver is a helper class that makes it easy to let windows
+// autoremember their position or position and size in a PrefService object.
+// To use this, add a |scoped_nsobject<WindowSizeAutosaver>| to your window
+// controller and initialize it in the window controller's init method, passing
+// a window and an autosave name. The autosaver will register for "window moved"
+// and "window resized" notifications and write the current window state to the
+// prefs service every time they fire. The window's size is automatically
+// restored when the autosaver's |initWithWindow:...| method is called.

[Robert Sesek, 2010/01/19 21:51:12]

Maybe add a note about not having "Visible on launched" checked?

+@interface WindowSizeAutosaver : NSObject {
+  NSWindow* window_;  // weak
+  PrefService* prefService_;  // weak
+  const wchar_t* path_;
+  WindowSizeAutosaverState state_;
+}
+
+- (id)initWithWindow:(NSWindow*)window
+         prefService:(PrefService*)prefs
+                path:(const wchar_t*)path
+               state:(WindowSizeAutosaverState)state;
+@end
+
+#endif  // CHROME_BROWSER_COCOA_WINDOW_SIZE_AUTOSAVER_H_
+