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

base/debug/stack_trace.cc

Index: base/debug/stack_trace.cc
diff --git a/base/debug/stack_trace.cc b/base/debug/stack_trace.cc
index 83eb415ec1e0ee631af590e69d258f66d8693e99..f880e906ad49cbe017489d5a4df9cc9d1de72dd4 100644
--- a/base/debug/stack_trace.cc
+++ b/base/debug/stack_trace.cc
@@ -223,6 +223,18 @@ std::string StackTrace::ToString() const {
 size_t TraceStackFramePointers(const void** out_trace,
                                size_t max_depth,
                                size_t skip_initial) {
+#if defined(OS_WIN)
+  // LOG(ERROR) << "&fp=" << _AddressOfReturnAddress();
+  // LOG(ERROR) << "fp=" << _ReturnAddress();
+  StackTrace stack(max_depth);
+  size_t count = 0;
+  const void* const* frames = stack.Addresses(&count);
+  if (count < skip_initial)
+    return 0u;
+  count -= skip_initial;
+  memcpy(out_trace, frames + skip_initial, count);
+  return count;
+#elif defined(OS_POSIX)
   // Usage of __builtin_frame_address() enables frame pointers in this
   // function even if they are not enabled globally. So 'fp' will always
   // be valid.
@@ -256,6 +268,7 @@ size_t TraceStackFramePointers(const void** out_trace,
   }
 
   return depth;
+#endif
 }
 
 ScopedStackFrameLinker::ScopedStackFrameLinker(void* fp, void* parent_fp)