Let IndexedDBContextImpl create its own task runner

chrome/browser/extensions/extension_service_unittest.cc

 // Copyright (c) 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/extensions/extension_service.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 4604 matching lines @@
   // stores data in the host file system.
   base::FilePath lso_dir_path =
       profile()->GetPath().AppendASCII("Local Storage");
   base::FilePath lso_file_path = lso_dir_path.AppendASCII(origin_id)
       .AddExtension(FILE_PATH_LITERAL(".localstorage"));
   EXPECT_TRUE(base::CreateDirectory(lso_dir_path));
   EXPECT_EQ(0, base::WriteFile(lso_file_path, NULL, 0));
   EXPECT_TRUE(base::PathExists(lso_file_path));
 
   // Create indexed db. Similarly, it is enough to only simulate this by
-  // creating the directory on the disk.
+  // creating the directory on the disk, and resetting the caches of
+  // "known" origins.
   IndexedDBContext* idb_context = BrowserContext::GetDefaultStoragePartition(
                                       profile())->GetIndexedDBContext();
-  idb_context->SetTaskRunnerForTesting(
-      base::ThreadTaskRunnerHandle::Get().get());
   base::FilePath idb_path = idb_context->GetFilePathForTesting(ext_url);
   EXPECT_TRUE(base::CreateDirectory(idb_path));
   EXPECT_TRUE(base::DirectoryExists(idb_path));
+  idb_context->ResetCachesForTesting();
 
   // Uninstall the extension.
   base::RunLoop run_loop;
   ASSERT_TRUE(
       service()->UninstallExtension(good_crx,
                                     extensions::UNINSTALL_REASON_FOR_TESTING,
                                     run_loop.QuitClosure(),
                                     NULL));
   // The data deletion happens on the IO thread.
   run_loop.Run();
@@ skipping 93 matching lines @@
   // stores data in the host file system.
   base::FilePath lso_dir_path =
       profile()->GetPath().AppendASCII("Local Storage");
   base::FilePath lso_file_path = lso_dir_path.AppendASCII(origin_id)
       .AddExtension(FILE_PATH_LITERAL(".localstorage"));
   EXPECT_TRUE(base::CreateDirectory(lso_dir_path));
   EXPECT_EQ(0, base::WriteFile(lso_file_path, NULL, 0));
   EXPECT_TRUE(base::PathExists(lso_file_path));
 
   // Create indexed db. Similarly, it is enough to only simulate this by
-  // creating the directory on the disk.
+  // creating the directory on the disk, and resetting the caches of
+  // "known" origins.
   IndexedDBContext* idb_context = BrowserContext::GetDefaultStoragePartition(
                                       profile())->GetIndexedDBContext();
-  idb_context->SetTaskRunnerForTesting(
-      base::ThreadTaskRunnerHandle::Get().get());
   base::FilePath idb_path = idb_context->GetFilePathForTesting(origin1);
   EXPECT_TRUE(base::CreateDirectory(idb_path));
   EXPECT_TRUE(base::DirectoryExists(idb_path));
+  idb_context->ResetCachesForTesting();
 
   // Uninstall one of them, unlimited storage should still be granted
   // to the origin.
   UninstallExtension(id1, false);
   EXPECT_EQ(1u, registry()->enabled_extensions().size());
   EXPECT_TRUE(profile()->GetExtensionSpecialStoragePolicy()->IsStorageUnlimited(
       origin1));
 
   // Check that the cookie is still there.
   cookie_store->GetAllCookiesForURLAsync(
@@ skipping 2173 matching lines @@
             shared_module->manifest()->type());
   EXPECT_TRUE(registry()->enabled_extensions().Contains(kExtensionId));
 
   // Reload the extension and wait for it to complete. This previously crashed
   // (see crbug.com/676815).
   service()->ReloadExtension(kExtensionId);
   content::RunAllBlockingPoolTasksUntilIdle();
   // The shared module should be enabled.
   EXPECT_TRUE(registry()->enabled_extensions().Contains(kExtensionId));
 }