Upstream Chrome on iOS source code [1/11].

ios/chrome/browser/browsing_data/browsing_data_removal_controller_unittest.mm

+// Copyright 2015 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 "ios/chrome/browser/browsing_data/browsing_data_removal_controller.h"
+
+#include <memory>
+
+#import "base/mac/scoped_nsobject.h"
+#import "base/test/ios/wait_util.h"
+#include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
+#include "ios/web/public/test/web_test.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+#import "third_party/ocmock/gtest_support.h"
+
+typedef web::WebTest BrowsingDataRemovalControllerTest;
+
+// Tests that |removeIOSSpecificIncognitoBrowsingDataFromBrowserState:| can
+// finish performing its operation even when a BrowserState is destroyed.
+TEST_F(BrowsingDataRemovalControllerTest, PerformAfterBrowserStateDestruction) {
+  __block BOOL block_was_called = NO;
+  id mock_delegate = [OCMockObject
+      mockForProtocol:@protocol(BrowsingDataRemovalControllerDelegate)];
+  base::scoped_nsobject<BrowsingDataRemovalController> removal_controller(
+      [[BrowsingDataRemovalController alloc] initWithDelegate:mock_delegate]);
+
+  TestChromeBrowserState::Builder builder;
+  std::unique_ptr<TestChromeBrowserState> browser_state = builder.Build();
+  ios::ChromeBrowserState* otr_browser_state =
+      browser_state->GetOffTheRecordChromeBrowserState();
+  int remove_all_mask = ~0;
+  [removal_controller
+      removeIOSSpecificIncognitoBrowsingDataFromBrowserState:otr_browser_state
+                                                        mask:remove_all_mask
+                                           completionHandler:^{
+                                             block_was_called = YES;
+                                           }];
+  // Destroy the BrowserState immediately.
+  browser_state->DestroyOffTheRecordChromeBrowserState();
+
+  base::test::ios::WaitUntilCondition(^bool() {
+    return block_was_called;
+  });
+}