Remove old (dead) app list code.

ui/app_list/views/app_list_view_unittest.cc

 // Copyright 2014 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 "ui/app_list/views/app_list_view.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 80 matching lines @@
   // top level views. Then closes the window.
   void RunDisplayTest();
 
   // Hides and reshows the app list with a folder open, expecting the main grid
   // view to be shown.
   void RunReshowWithOpenFolderTest();
 
   // Tests that pressing the search box's back button navigates correctly.
   void RunBackTest();
 
-  // Tests displaying of the experimental app list and shows the start page.
+  // Tests displaying of the app list and shows the start page.
   void RunStartPageTest();
 
   // Tests switching rapidly between multiple pages of the launcher.
   void RunPageSwitchingAnimationTest();
 
   // Tests changing the App List profile.
   void RunProfileChangeTest();
 
   // Tests displaying of the search results.
   void RunSearchResultsTest();
@@ skipping 42 matching lines @@
 };
 
 // Extend the regular AppListTestViewDelegate to communicate back to the test
 // context. Note the test context doesn't simply inherit this, because the
 // delegate is owned by the view.
 class UnitTestViewDelegate : public app_list::test::AppListTestViewDelegate {
  public:
   explicit UnitTestViewDelegate(AppListViewTestContext* parent)
       : parent_(parent) {}
 
-  // Overridden from app_list::AppListViewDelegate:
-  bool ShouldCenterWindow() const override {
-    return app_list::switches::IsCenteredAppListEnabled();
-  }
-
   // Overridden from app_list::test::AppListTestViewDelegate:
   void ViewClosing() override { parent_->NativeWidgetClosing(); }
 
  private:
   AppListViewTestContext* parent_;
 
   DISALLOW_COPY_AND_ASSIGN(UnitTestViewDelegate);
 };
 
 AppListViewTestContext::AppListViewTestContext(gfx::NativeView parent) {
@@ skipping 574 matching lines @@
 TEST_F(AppListViewTestAura, AppListOverlayTest) {
   EXPECT_NO_FATAL_FAILURE(test_context_->RunAppListOverlayTest());
 }
 
 TEST_F(AppListViewTestDesktop, AppListOverlayTest) {
   EXPECT_NO_FATAL_FAILURE(test_context_->RunAppListOverlayTest());
 }
 
 }  // namespace test
 }  // namespace app_list