Hosted apps on OS X now act more like a native app.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

 // 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 "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 119 matching lines @@
   // Windows, but |-makeKeyAndOrderFront:| won't send |-windowDidBecomeMain:|
   // until we return to the runloop. Therefore any calls to
   // |chrome::FindLastActiveWithHostDesktopType| will return the previous
   // browser instead if we don't explicitly set it here.
   BrowserList::SetLastActive(browser_);
 
   bool is_session_restore = browser_->is_session_restore();
   NSWindowAnimationBehavior saved_animation_behavior =
       NSWindowAnimationBehaviorDefault;
   bool did_save_animation_behavior = false;
-  // Turn off swishing when restoring windows.
-  if (is_session_restore &&
+  // Turn off swishing when restoring windows or showing an app.
+  if ((is_session_restore || browser_->is_app()) &&
       [window() respondsToSelector:@selector(animationBehavior)] &&
       [window() respondsToSelector:@selector(setAnimationBehavior:)]) {
     did_save_animation_behavior = true;
     saved_animation_behavior = [window() animationBehavior];
     [window() setAnimationBehavior:NSWindowAnimationBehaviorNone];
   }
 
   {
     TRACE_EVENT0("ui", "BrowserWindowCocoa::Show makeKeyAndOrderFront");
     // This call takes up a substantial part of startup time, and an even more
@@ skipping 18 matching lines @@
     [window() setAnimationBehavior:saved_animation_behavior];
 
   browser_->OnWindowDidShow();
 }
 
 void BrowserWindowCocoa::ShowInactive() {
   [window() orderFront:controller_];
 }
 
 void BrowserWindowCocoa::Hide() {
-  // Not implemented.
+  [window() orderOut:controller_];
 }
 
 void BrowserWindowCocoa::SetBounds(const gfx::Rect& bounds) {
   gfx::Rect real_bounds = [controller_ enforceMinWindowSize:bounds];
 
   ExitFullscreen();
   NSRect cocoa_bounds = NSMakeRect(real_bounds.x(), 0,
                                    real_bounds.width(),
                                    real_bounds.height());
   // Flip coordinates based on the primary screen.
@@ skipping 616 matching lines @@
   if (browser_->bookmark_bar_state() != BookmarkBar::DETACHED)
     return 0;
   return 40;
 }
 
 void BrowserWindowCocoa::ExecuteExtensionCommand(
     const extensions::Extension* extension,
     const extensions::Command& command) {
   [cocoa_controller() executeExtensionCommand:extension->id() command:command];
 }