Make OSX App Launcher Launchable from the Dock.

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 "skia/ext/skia_utils_mac.h"
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/app_list_view_delegate.h"
@@ skipping 52 matching lines @@
     [self totalPagesChanged];
     [self selectedPageChanged:0];
     [appsGridController_ setPaginationObserver:self];
   }
   return self;
 }
 
 - (void)dealloc {
   [appsGridController_ setPaginationObserver:nil];
   [appsGridController_ setDelegate:NULL];
+  delegate_.reset();
   [super dealloc];
 }
 
 - (AppsGridController*)appsGridController {
   return appsGridController_;
 }
 
 - (NSSegmentedControl*)pagerControl {
   return pagerControl_;
 }
@@ skipping 56 matching lines @@
   [pagerControl_ setFrameOrigin:
       NSMakePoint(NSMidX(viewFrame) - NSMidX([pagerControl_ bounds]),
                   kViewPagerOffsetY)];
 }
 
 - (void)selectedPageChanged:(int)newSelected {
   [pagerControl_ selectSegmentWithTag:newSelected];
 }
 
 @end