Add 'third_party/abseil_cpp/' from commit '768eb2ca2857342673fcd462792ce04b8bac3fa3' r/781

git-subtree-dir: third_party/abseil_cpp
git-subtree-mainline: ffb2ae54beb5796cd408fbe15d2d2da09ff37adf
git-subtree-split: 768eb2ca2857342673fcd462792ce04b8bac3fa3

1 files changed, 43 insertions, 0 deletions

diff --git a/third_party/abseil_cpp/absl/flags/usage.h b/third_party/abseil_cpp/absl/flags/usage.h
new file mode 100644
index 000000000000..ad12ab7ad902
--- /dev/null
+++ b/third_party/abseil_cpp/absl/flags/usage.h
@@ -0,0 +1,43 @@
+//
+//  Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_FLAGS_USAGE_H_
+#define ABSL_FLAGS_USAGE_H_
+
+#include "absl/base/config.h"
+#include "absl/strings/string_view.h"
+
+// --------------------------------------------------------------------
+// Usage reporting interfaces
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Sets the "usage" message to be used by help reporting routines.
+// For example:
+//  absl::SetProgramUsageMessage(
+//      absl::StrCat("This program does nothing.  Sample usage:\n", argv[0],
+//                   " <uselessarg1> <uselessarg2>"));
+// Do not include commandline flags in the usage: we do that for you!
+// Note: Calling SetProgramUsageMessage twice will trigger a call to std::exit.
+void SetProgramUsageMessage(absl::string_view new_usage_message);
+
+// Returns the usage message set by SetProgramUsageMessage().
+absl::string_view ProgramUsageMessage();
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_FLAGS_USAGE_H_