Add WebStateListOrderController to control WebState insertion.

ios/chrome/browser/tabs/tab_model_order_controller_unittest.mm

Index: ios/chrome/browser/tabs/tab_model_order_controller_unittest.mm
diff --git a/ios/chrome/browser/tabs/tab_model_order_controller_unittest.mm b/ios/chrome/browser/tabs/tab_model_order_controller_unittest.mm
deleted file mode 100644
index 052ef9c9e871c0e7df4b5c1391f7cc599de71be5..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/tabs/tab_model_order_controller_unittest.mm
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2012 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 "base/mac/scoped_nsautorelease_pool.h"
-#include "base/memory/ptr_util.h"
-#include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
-#include "ios/chrome/browser/browser_state/test_chrome_browser_state_manager.h"
-#import "ios/chrome/browser/sessions/session_window.h"
-#import "ios/chrome/browser/sessions/test_session_service.h"
-#import "ios/chrome/browser/tabs/tab.h"
-#import "ios/chrome/browser/tabs/tab_model.h"
-#import "ios/chrome/browser/tabs/tab_model_order_controller.h"
-#include "ios/chrome/test/ios_chrome_scoped_testing_chrome_browser_state_manager.h"
-#include "ios/web/public/referrer.h"
-#include "ios/web/public/test/test_web_thread_bundle.h"
-#include "ios/web/public/web_thread.h"
-#include "testing/platform_test.h"
-#import "third_party/ocmock/OCMock/OCMock.h"
-
-namespace {
-
-class TabModelOrderControllerTest : public PlatformTest {
- protected:
-  TabModelOrderControllerTest()
-      : thread_bundle_(web::TestWebThreadBundle::IO_MAINLOOP),
-        scoped_browser_state_manager_(
-            base::MakeUnique<TestChromeBrowserStateManager>(base::FilePath())) {
-  }
-
-  void SetUp() override {
-    DCHECK_CURRENTLY_ON(web::WebThread::UI);
-    PlatformTest::SetUp();
-
-    TestChromeBrowserState::Builder test_cbs_builder;
-    chrome_browser_state_ = test_cbs_builder.Build();
-
-    dummy_tab_.reset([[Tab alloc]
-        initWithWindowName:nil
-                    opener:nullptr
-               openedByDOM:NO
-                     model:nil
-              browserState:chrome_browser_state_.get()]);
-
-    sessionWindow_.reset([[SessionWindowIOS new] retain]);
-
-    base::scoped_nsobject<TestSessionService> test_service(
-        [[TestSessionService alloc] init]);
-    tabModel_.reset([[TabModel alloc]
-        initWithSessionWindow:sessionWindow_
-               sessionService:test_service
-                 browserState:chrome_browser_state_.get()]);
-
-    orderController_.reset(
-        [[TabModelOrderController alloc] initWithTabModel:tabModel_]);
-
-    // Values to use when creating new tabs.
-    url_ = GURL("https://www.some.url.com");
-    referrer_ = web::Referrer(GURL("https://www.some.referer.com"),
-                              web::ReferrerPolicyDefault);
-  }
-
-  void TearDown() override {
-    [dummy_tab_ close];
-
-    [tabModel_ browserStateDestroyed];
-
-    PlatformTest::TearDown();
-  }
-
-  Tab* addTabToParentInBackground(Tab* parentTab) {
-    return [tabModel_
-        insertOrUpdateTabWithURL:url_
-                        referrer:referrer_
-                      transition:ui::PAGE_TRANSITION_LINK
-                      windowName:nil
-                          opener:parentTab
-                     openedByDOM:NO
-                         atIndex:TabModelConstants::kTabPositionAutomatically
-                    inBackground:YES];
-  }
-
-  GURL url_;
-  web::Referrer referrer_;
-  web::TestWebThreadBundle thread_bundle_;
-  IOSChromeScopedTestingChromeBrowserStateManager scoped_browser_state_manager_;
-  base::scoped_nsobject<SessionWindowIOS> sessionWindow_;
-  std::unique_ptr<TestChromeBrowserState> chrome_browser_state_;
-  base::mac::ScopedNSAutoreleasePool pool_;
-  base::scoped_nsobject<Tab> dummy_tab_;
-  base::scoped_nsobject<TabModelOrderController> orderController_;
-  base::scoped_nsobject<TabModel> tabModel_;
-};
-
-// Verifies that tabs added in the background (e.g. from context menu -> Open in
-// new tab) are inserted in the proper order.
-TEST_F(TabModelOrderControllerTest, DetermineInsertionIndexForBackgroundTabs) {
-  // Add |parentTab|, then add |childTab| in the background.
-  Tab* parentTab = [tabModel_ insertTabWithURL:url_
-                                      referrer:referrer_
-                                    windowName:nil
-                                        opener:nil
-                                       atIndex:0];
-  Tab* childTab = addTabToParentInBackground(parentTab);
-
-  // Verify a second child would be inserted in an index after the first child.
-  int index = [orderController_
-      insertionIndexForTab:dummy_tab_
-                transition:ui::PAGE_TRANSITION_LINK
-                    opener:parentTab
-                 adjacency:TabModelOrderConstants::kAdjacentAfter];
-  EXPECT_EQ(2, index);
-
-  // Now add a child of the child, then verify that a second child of the parent
-  // would be inserted before the child's child.
-  addTabToParentInBackground(childTab);
-  index = [orderController_
-      insertionIndexForTab:dummy_tab_
-                transition:ui::PAGE_TRANSITION_LINK
-                    opener:parentTab
-                 adjacency:TabModelOrderConstants::kAdjacentAfter];
-  EXPECT_EQ(2, index);
-}
-}  // anonymous namespace