Update Crashpad to b47bf6c250c6b825dee1c5fbad9152c2c962e828

third_party/crashpad/crashpad/util/win/registration_protocol_win.h

Index: third_party/crashpad/crashpad/util/win/registration_protocol_win.h
diff --git a/third_party/crashpad/crashpad/util/win/registration_protocol_win.h b/third_party/crashpad/crashpad/util/win/registration_protocol_win.h
index c57c6e20544a8a0baea3a85e35be80ff7745aa1f..122098358b86b8cd2ae40e818d1f4a1d32510c90 100644
--- a/third_party/crashpad/crashpad/util/win/registration_protocol_win.h
+++ b/third_party/crashpad/crashpad/util/win/registration_protocol_win.h
@@ -82,8 +82,14 @@ struct ClientToServerMessage {
   enum Type : uint32_t {
     //! \brief For RegistrationRequest.
     kRegister,
+
     //! \brief For ShutdownRequest.
     kShutdown,
+
+    //! \brief An empty message sent by the initial client in asynchronous mode.
+    //!     No data is required, this just confirms that the server is ready to
+    //!     accept client registrations.
+    kPing,
   } type;
 
   union {
@@ -128,6 +134,17 @@ bool SendToCrashHandlerServer(const base::string16& pipe_name,
                               const ClientToServerMessage& message,
                               ServerToClientMessage* response);
 
+//! \brief Wraps CreateNamedPipe() to create a single named pipe instance.
+//!
+//! \param[in] pipe_name The name to use for the pipe.
+//! \param[in] first_instance If `true`, the named pipe instance will be
+//!     created with `FILE_FLAG_FIRST_PIPE_INSTANCE`. This ensures that the the
+//!     pipe name is not already in use when created. The first instance will be
+//!     created with an untrusted integrity SACL so instances of this pipe can
+//!     be connected to by processes of any integrity level.
+HANDLE CreateNamedPipeInstance(const std::wstring& pipe_name,
+                               bool first_instance);
+
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_WIN_REGISTRATION_PROTOCOL_WIN_H_