[ios] Register test web schemes in WebTestSuite.

ios/web/test/web_test_suite.cc

-// 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.
-
-#include "ios/web/test/web_test_suite.h"
-
-#include "base/macros.h"
-#include "base/metrics/statistics_recorder.h"
-#include "ios/web/web_thread_impl.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace web {
-
-class WebTestSuiteListener : public testing::EmptyTestEventListener {
- public:
-  WebTestSuiteListener() {}
-  void OnTestEnd(const testing::TestInfo& test_info) override {
-    WebThreadImpl::FlushThreadPoolHelperForTesting();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(WebTestSuiteListener);
-};
-
-WebTestSuite::WebTestSuite(int argc, char** argv)
-    : base::TestSuite(argc, argv) {
-}
-
-WebTestSuite::~WebTestSuite() {
-}
-
-void WebTestSuite::Initialize() {
-  base::TestSuite::Initialize();
-
-  // Initialize the histograms subsystem, so that any histograms hit in tests
-  // are correctly registered with the statistics recorder and can be queried
-  // by tests.
-  base::StatisticsRecorder::Initialize();
-
-  testing::UnitTest::GetInstance()->listeners().Append(
-      new WebTestSuiteListener);
-}
-
-}  // namespace web