Add ConstThreadState to mach_extensions.h and use it everywhere

snapshot/mac/cpu_context_mac.h

 // Copyright 2014 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_SNAPSHOT_MAC_SNAPSHOT_CPU_CONTEXT_MAC_H_
 #define CRASHPAD_SNAPSHOT_MAC_SNAPSHOT_CPU_CONTEXT_MAC_H_
 
 #include <mach/mach.h>
 
 #include "build/build_config.h"
 #include "snapshot/cpu_context.h"
+#include "util/mach/mach_extensions.h"
 
 namespace crashpad {
 namespace internal {
 
 #if defined(ARCH_CPU_X86_FAMILY) || DOXYGEN
 
 //! \brief Initializes a CPUContextX86 structure from native context structures
 //!     on Mac OS X.
 //!
 //! \a flavor, \a state, and \a state_count may be supplied by exception
@@ skipping 21 matching lines @@
 //!     flavor must be `THREAD_STATE_NONE`. If a “universal” structure is used,
 //!     it must carry 32-bit state data of the correct type.
 //! \param[in] state_count The number of `natural_t`-sized (`int`-sized) units
 //!     in \a state. This may be 0 if \a state is `nullptr`.
 //! \param[in] x86_thread_state32 The state of the thread’s integer registers.
 //! \param[in] x86_float_state32 The state of the thread’s floating-point
 //!     registers.
 //! \param[in] x86_debug_state32 The state of the thread’s debug registers.
 void InitializeCPUContextX86(CPUContextX86* context,
                              thread_state_flavor_t flavor,
-                             const natural_t* state,
+                             ConstThreadState state,
                              mach_msg_type_number_t state_count,
                              const x86_thread_state32_t* x86_thread_state32,
                              const x86_float_state32_t* x86_float_state32,
                              const x86_debug_state32_t* x86_debug_state32);
 
 //! \brief Initializes a CPUContextX86_64 structure from native context
 //!     structures on Mac OS X.
 //!
 //! \a flavor, \a state, and \a state_count may be supplied by exception
 //! handlers in order for the \a context parameter to be initialized by the
@@ skipping 20 matching lines @@
 //!     flavor must be `THREAD_STATE_NONE`. If a “universal” structure is used,
 //!     it must carry 64-bit state data of the correct type.
 //! \param[in] state_count The number of `int`-sized units in \a state. This may
 //!     be 0 if \a state is `nullptr`.
 //! \param[in] x86_thread_state64 The state of the thread’s integer registers.
 //! \param[in] x86_float_state64 The state of the thread’s floating-point
 //!     registers.
 //! \param[in] x86_debug_state64 The state of the thread’s debug registers.
 void InitializeCPUContextX86_64(CPUContextX86_64* context,
                                 thread_state_flavor_t flavor,
-                                const natural_t* state,
+                                ConstThreadState state,
                                 mach_msg_type_number_t state_count,
                                 const x86_thread_state64_t* x86_thread_state64,
                                 const x86_float_state64_t* x86_float_state64,
                                 const x86_debug_state64_t* x86_debug_state64);
 
 #endif
 
 }  // namespace internal
 }  // namespace crashpad
 
 #endif  // CRASHPAD_SNAPSHOT_MAC_SNAPSHOT_CPU_CONTEXT_MAC_H_