Make --enable-heap-profiling=native "work" on Windows.

base/debug/stack_trace.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_DEBUG_STACK_TRACE_H_
 #define BASE_DEBUG_STACK_TRACE_H_
 
 #include <stddef.h>
 
 #include <iosfwd>
 #include <string>
 
 #include "base/base_export.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
 #endif
 
 #if defined(OS_WIN)
 struct _EXCEPTION_POINTERS;
 struct _CONTEXT;
 #endif
 
-#if defined(OS_POSIX) && ( \
-    defined(__i386__) || defined(__x86_64__) || \
-    (defined(__arm__) && !defined(__thumb__)))
+//#if defined(OS_POSIX) && ( \

[brettw, 2017/02/22 22:03:31]

We should clean this up before checking it in.

[Wez, 2017/02/23 00:12:22]

Yup; this was uploaded mainly to unblock Albert - I'll update and upload a clean
version today.

+//    defined(__i386__) || defined(__x86_64__) || \
+//    (defined(__arm__) && !defined(__thumb__)))
 #define HAVE_TRACE_STACK_FRAME_POINTERS 1
-#else
-#define HAVE_TRACE_STACK_FRAME_POINTERS 0
-#endif
+//#else
+//#define HAVE_TRACE_STACK_FRAME_POINTERS 0
+//#endif
 
 namespace base {
 namespace debug {
 
 // Enables stack dump to console output on exception and signals.
 // When enabled, the process will quit immediately. This is meant to be used in
 // unit_tests only! This is not thread-safe: only call from main thread.
 // In sandboxed processes, this has to be called before the sandbox is turned
 // on.
 // Calling this function on Linux opens /proc/self/maps and caches its
@@ skipping 141 matching lines @@
                          int base,
                          size_t padding);
 #endif  // defined(OS_POSIX) && !defined(OS_ANDROID)
 
 }  // namespace internal
 
 }  // namespace debug
 }  // namespace base
 
 #endif  // BASE_DEBUG_STACK_TRACE_H_