Move ownership of the AppListViewDelegate into the AppListService

ui/app_list/cocoa/app_list_window_controller_unittest.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 "base/mac/scoped_nsobject.h"
 #include "base/strings/utf_string_conversions.h"
 #import "testing/gtest_mac.h"
 #include "ui/app_list/app_list_view_delegate.h"
 #import "ui/app_list/cocoa/app_list_view_controller.h"
 #import "ui/app_list/cocoa/app_list_window_controller.h"
 #include "ui/app_list/search_box_model.h"
 #include "ui/app_list/test/app_list_test_view_delegate.h"
 #import "ui/gfx/test/ui_cocoa_test_helper.h"
 
 namespace {
 
 class AppListWindowControllerTest : public ui::CocoaTest {
  public:
   AppListWindowControllerTest();
 
  protected:
   virtual void TearDown() OVERRIDE;
 
   base::scoped_nsobject<AppListWindowController> controller_;
 
   app_list::test::AppListTestViewDelegate* delegate() {
-    return static_cast<app_list::test::AppListTestViewDelegate*>(
-        [[controller_ appListViewController] delegate]);
+    return delegate_.get();
   }
 
  private:
+  scoped_ptr<app_list::test::AppListTestViewDelegate> delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(AppListWindowControllerTest);
 };
 
-AppListWindowControllerTest::AppListWindowControllerTest() {
+AppListWindowControllerTest::AppListWindowControllerTest()
+    : delegate_(new app_list::test::AppListTestViewDelegate) {
   Init();
-  scoped_ptr<app_list::AppListViewDelegate> delegate(
-      new app_list::test::AppListTestViewDelegate);
   controller_.reset([[AppListWindowController alloc] init]);
-  [[controller_ appListViewController] setDelegate:delegate.Pass()];
+  [[controller_ appListViewController] setDelegate:delegate()];
 }
 
 void AppListWindowControllerTest::TearDown() {
   EXPECT_TRUE(controller_.get());
   [[controller_ window] close];
-  [[controller_ appListViewController]
-     setDelegate:scoped_ptr<app_list::AppListViewDelegate>()];
+  [[controller_ appListViewController] setDelegate:NULL];
   controller_.reset();
   ui::CocoaTest::TearDown();
 }
 
 }  // namespace
 
 // Test showing, hiding and closing the app list window.
 TEST_F(AppListWindowControllerTest, ShowHideCloseRelease) {
   EXPECT_TRUE([controller_ window]);
   [[controller_ window] makeKeyAndOrderFront:nil];
@@ skipping 28 matching lines @@
   EXPECT_TRUE([view_controller showingSearchResults]);
 
   EXPECT_EQ(0, delegate()->open_search_result_count());
   [view_controller openResult:nil];
   EXPECT_EQ(1, delegate()->open_search_result_count());
 
   EXPECT_TRUE([view_controller showingSearchResults]);
   [[controller_ window] close];  // Hide.
   EXPECT_FALSE([view_controller showingSearchResults]);
 }