Explicitly specify whether to emit frame pointers by default.

chrome/browser/chromeos/libc_close_tracking.cc

 // Copyright 2016 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.
 
 #include <errno.h>
 #include <sys/syscall.h>
 #include <unistd.h>
 
 #include <sstream>
 #include <string>
 #include <unordered_map>
 
 #include "base/debug/crash_logging.h"
+#include "base/debug/debugging_flags.h"
 #include "base/debug/stack_trace.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/process/process_handle.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/lock.h"
 #include "chrome/common/crash_keys.h"
 
 namespace {
@@ skipping 88 matching lines @@
   const int ret = IGNORE_EINTR(syscall(SYS_close, fd));
   // Captures errno and restores it later in case it is changed.
   const ErrnoCapture close_errno;
 
   // Return if tracking is not enabled for the current process.
   if (!g_stack_tracker || !g_stack_tracker->ShouldTrack())
     return ret;
 
   // Capture stack for successful close.
   if (ret == 0) {
-#if HAVE_TRACE_STACK_FRAME_POINTERS && !defined(MEMORY_SANITIZER)
+#if BUILDFLAG(CAN_UNWIND_WITH_FRAME_POINTERS) && !defined(MEMORY_SANITIZER)
     // Use TraceStackFramePointers because the backtrack() based default
     // capturing gets only the last stack frame and is not useful.
     // With the exception of when MSAN is enabled. See comments for why
     // StackTraceTest.TraceStackFramePointers is disabled in MSAN builds.
     const void* frames[64];
     const size_t frame_count =
         base::debug::TraceStackFramePointers(frames, arraysize(frames), 0);
     g_stack_tracker->SetStack(fd, base::debug::StackTrace(frames, frame_count));
 #else
     // Use default StackTrace when TraceStackFramePointers is not available.
@@ skipping 45 matching lines @@
 const base::debug::StackTrace* GetLastCloseStackForTest(int fd) {
   return g_stack_tracker ? g_stack_tracker->GetStack(fd) : nullptr;
 }
 
 void SetCloseTrackingIgnorePidForTest(bool ignore_pid) {
   DCHECK(g_stack_tracker);
   g_stack_tracker->set_ignore_pid(ignore_pid);
 }
 
 }  // namespace chromeos