Update Crashpad to 1f28a123a4c9449e3d7ddad4ff00dacd366d5216

third_party/crashpad/crashpad/util/linux/scoped_ptrace_attach.h

Index: third_party/crashpad/crashpad/util/linux/scoped_ptrace_attach.h
diff --git a/third_party/crashpad/crashpad/util/linux/scoped_ptrace_attach.h b/third_party/crashpad/crashpad/util/linux/scoped_ptrace_attach.h
new file mode 100644
index 0000000000000000000000000000000000000000..a3d9d6987f29d19a85710b1a6c19e5ae611d88a4
--- /dev/null
+++ b/third_party/crashpad/crashpad/util/linux/scoped_ptrace_attach.h
@@ -0,0 +1,52 @@
+// Copyright 2017 The Crashpad Authors. All rights reserved.
+//
+// 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
+//
+//     http://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 CRASHPAD_UTIL_LINUX_SCOPED_PTRACE_ATTACH_H_
+#define CRASHPAD_UTIL_LINUX_SCOPED_PTRACE_ATTACH_H_
+
+#include <sys/types.h>
+
+#include "base/macros.h"
+
+namespace crashpad {
+
+//! \brief Maintains a `ptrace()` attachment to a process.
+//!
+//! On destruction, the process will be detached.
+class ScopedPtraceAttach {
+ public:
+  ScopedPtraceAttach();
+  ~ScopedPtraceAttach();
+
+  //! \brief Detaches from the process by calling `ptrace()`.
+  //!
+  //! \return `true` on success. `false` on failure, with a message logged.
+  bool Reset();
+
+  //! \brief Detaches from any previously attached process, attaches to the
+  //!      process with process ID \a pid, and blocks until the target process
+  //!      has stopped by calling `waitpid()`.
+  //!
+  //! \return `true` on success. `false` on failure, with a message logged.
+  bool ResetAttach(pid_t pid);
+
+ private:
+  pid_t pid_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedPtraceAttach);
+};
+
+}  // namespace crashpad
+
+#endif  // CRASHPAD_UTIL_LINUX_SCOPED_PTRACE_ATTACH_H_