Enabling the new drag off shellf feature by default

chrome/browser/ui/ash/launcher/chrome_launcher_controller_browsertest.cc

 // 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.
 
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 
 #include "apps/native_app_window.h"
 #include "apps/shell_window.h"
 #include "apps/shell_window_registry.h"
 #include "ash/ash_switches.h"
@@ skipping 1574 matching lines @@
   EXPECT_EQ(3, model_->item_count());  // No new item got added.
   EXPECT_TRUE(grid_view->forward_events_to_drag_and_drop_host_for_test());
   generator.ReleaseLeftButton();
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_FALSE(grid_view->forward_events_to_drag_and_drop_host_for_test());
   EXPECT_EQ(3, model_->item_count());  // And it remains that way.
 }
 
 // Do tests for removal of items from the shelf by dragging.
 IN_PROC_BROWSER_TEST_F(LauncherAppBrowserTest, DragOffShelf) {
-  // Set the command line option to enable the new functionality.
-  CommandLine::ForCurrentProcess()->AppendSwitch(
-      ash::switches::kAshEnableDragOffShelf);
   aura::test::EventGenerator generator(
       ash::Shell::GetPrimaryRootWindow(), gfx::Point());
   ash::test::LauncherViewTestAPI test(launcher_->GetLauncherViewForTest());
 
   // Create a known application and check that we have 3 items in the launcher.
   CreateShortcut("app1");
   EXPECT_EQ(3, model_->item_count());
 
   // Test #1: Ripping out the browser item should not change anything.
   int browser_index = GetIndexOfLauncherItemType(ash::TYPE_BROWSER_SHORTCUT);
@@ skipping 167 matching lines @@
   // Now show overflow bubble.
   test.ShowOverflowBubble();
   EXPECT_TRUE(launcher_->IsShowingOverflowBubble());
 
   // Unpin first pinned app and there should be no crash.
   controller_->UnpinAppWithID(std::string("fake_app_0"));
 
   test.RunMessageLoopUntilAnimationsDone();
   EXPECT_FALSE(launcher_->IsShowingOverflowBubble());
 }