Add MinidumpSystemInfoWriter and its test

compat/non_win/dbghelp.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,
@@ skipping 191 matching lines @@
     //!
     //! This field is only valid if #VendorId identifies the CPU vendor as
     //! “AuthenticAMD”.
     uint32_t AMDExtendedCpuFeatures;
   } X86CpuInfo;
 
   //! \brief Information about non-x86 CPUs, and x86_64 CPUs when not running
   //!     32-bit x86 processes.
   struct __attribute__((packed, aligned(4))) {
     //! \brief Bitfields containing supported CPU capabilities as identified by
-    //!     bits corresponding to `PF_*` values passed to
+    //!     bits corresponding to \ref PF_x "PF_*" values passed to
     //!     `IsProcessorFeaturePresent()`.
     uint64_t ProcessorFeatures[2];
   } OtherCpuInfo;
 };
 
 //! \brief Information about the system that hosted the process that the
 //!     minidump file contains a snapshot of.
 struct __attribute__((packed, aligned(4))) MINIDUMP_SYSTEM_INFO {
   // The next 4 fields are from the SYSTEM_INFO structure returned by
   // GetSystemInfo().
@@ skipping 617 matching lines @@
   //!  - A MINIDUMP_MODULE_LIST stream. All loaded modules are present.
   //!  - Typically, a MINIDUMP_MEMORY_LIST stream containing duplicate pointers
   //!    to the stack memory regions also referenced by the MINIDUMP_THREAD_LIST
   //!    stream. Since Windows 7 (NT 6.1), this type of minidump file also
   //!    includes a MINIDUMP_MEMORY_DESCRIPTOR containing the 256 bytes centered
   //!    around the exception address or the instruction pointer.
   MiniDumpNormal = 0x00000000,
 };
 
 #endif  // CRASHPAD_COMPAT_NON_WIN_DBGHELP_H_