Report CHECK/DCHECK to test launcher summary output.

base/test/logging_utils.cc

Index: base/test/logging_utils.cc
diff --git a/base/test/logging_utils.cc b/base/test/logging_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a74f6cf3be8a52259829f8e772f7cf88dd0e1185
--- /dev/null
+++ b/base/test/logging_utils.cc
@@ -0,0 +1,46 @@
+// Copyright 2017 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 "base/test/logging_utils.h"
+
+#include <utility>
+
+namespace logging {
+
+namespace {
+
+// std::swap doesn't work with base::Callback.
+void SwapHandlers(LogAssertHandlerFunction* a, LogAssertHandlerFunction* b) {
+  LogAssertHandlerFunction temp = *a;
+  *a = *b;
+  *b = temp;
+}
+
+}  // namespace
+
+ScopedLogAssertHandler::ScopedLogAssertHandler() {}
+
+ScopedLogAssertHandler::ScopedLogAssertHandler(LogAssertHandlerFunction handler)
+    : handler_(handler) {
+  if (handler_)
+    PushLogAssertHandler(handler);
+}
+
+ScopedLogAssertHandler::~ScopedLogAssertHandler() {
+  if (handler_)
+    PopLogAssertHandler();
+}
+
+ScopedLogAssertHandler::ScopedLogAssertHandler(ScopedLogAssertHandler&& other) {
+  SwapHandlers(&handler_, &other.handler_);
+}
+
+ScopedLogAssertHandler& ScopedLogAssertHandler::operator=(
+    ScopedLogAssertHandler&& other) {
+  ScopedLogAssertHandler temp_copy(std::move(other));
+  SwapHandlers(&handler_, &temp_copy.handler_);
+  return *this;
+}
+
+}  // namespace logging