Add tools for code coverage support in iOS.

testing/coverage_util_ios.cc

Index: testing/coverage_util_ios.cc
diff --git a/testing/coverage_util_ios.cc b/testing/coverage_util_ios.cc
deleted file mode 100644
index d888a208ce150be8e422e12025ce7e18d6cbe15f..0000000000000000000000000000000000000000
--- a/testing/coverage_util_ios.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2014 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.
-
-extern "C" void __gcov_flush(void);
-
-namespace coverage_util {
-
-void FlushCoverageDataIfNecessary() {
-#if !defined(NDEBUG) && defined(ENABLE_TEST_CODE_COVERAGE)
-  __gcov_flush();
-#endif
-}
-
-}  // namespace coverage_util