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

chrome/browser/ui/cocoa/browser_window_cocoa.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.mm b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
index 485ebb18260378ec168646d5fd08dba0d31c2709..7d8a4efe917eabe8022e816939dd3bac39a64be2 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
@@ -137,8 +137,8 @@ void BrowserWindowCocoa::Show() {
   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;
@@ -177,7 +177,7 @@ void BrowserWindowCocoa::ShowInactive() {
 }
 
 void BrowserWindowCocoa::Hide() {
-  // Not implemented.
+  [window() orderOut:controller_];
 }
 
 void BrowserWindowCocoa::SetBounds(const gfx::Rect& bounds) {