Remove need to sign in to use the App Launcher.

ui/app_list/cocoa/app_list_view_controller.mm

 // Copyright 2013 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.
 
 #import "ui/app_list/cocoa/app_list_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/mac_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "skia/ext/skia_utils_mac.h"
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/app_list_model.h"
 #include "ui/app_list/app_list_view_delegate.h"
 #include "ui/app_list/app_list_view_delegate_observer.h"
-#include "ui/app_list/signin_delegate.h"
 #import "ui/app_list/cocoa/app_list_pager_view.h"
 #import "ui/app_list/cocoa/apps_grid_controller.h"
-#import "ui/app_list/cocoa/signin_view_controller.h"
 #import "ui/base/cocoa/flipped_view.h"
 #include "ui/app_list/search_box_model.h"
 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
 
 namespace {
 
 // The roundedness of the corners of the bubble.
 const CGFloat kBubbleCornerRadius = 3;
 
 // Height of the pager.
@@ skipping 327 matching lines @@
         result, false /* auto_launch */, 0 /* event flags */);
   }
 }
 
 - (void)redoSearch {
   [self modelTextDidChange];
 }
 
 - (void)onProfilesChanged {
   [appsSearchBoxController_ rebuildMenu];
-  app_list::SigninDelegate* signinDelegate =
-      delegate_ ? delegate_->GetSigninDelegate() : NULL;
-  BOOL showSigninView = signinDelegate && signinDelegate->NeedSignin();
-
-  [[signinViewController_ view] removeFromSuperview];
-  signinViewController_.reset();
-
-  if (!showSigninView) {
-    [backgroundView_ setHidden:NO];
-    return;
-  }
-
-  [backgroundView_ setHidden:YES];
-  signinViewController_.reset(
-      [[SigninViewController alloc] initWithFrame:[backgroundView_ frame]
-                                     cornerRadius:kBubbleCornerRadius
-                                         delegate:signinDelegate]);
-  [[self view] addSubview:[signinViewController_ view]];
 }
 
 @end