[ios] Register test web schemes in WebTestSuite.

ios/web/test/web_test_suite.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.
 
 #include "ios/web/test/web_test_suite.h"
 
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/statistics_recorder.h"
+#import "ios/web/public/test/test_web_client.h"
+#include "ios/web/public/url_schemes.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) {
-}
+    : base::TestSuite(argc, argv),
+      web_client_(base::WrapUnique(new TestWebClient)) {}
 
-WebTestSuite::~WebTestSuite() {
-}
+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);
+
+  RegisterWebSchemes(false);
 }
 
 }  // namespace web