UserAgent: Mozilla/5.0 (X11; CrOS x86_64 7647.84.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36
Platform: 7647.84.0 (Official Build) stable-channel gnawty

Steps to reproduce the problem:
1. ARC welder crash
2. ARC export "minidump"
3. but I cannot find "minidump"

What is the expected behavior?
Find "minidump", and convert it to "core file" by minidump-2-core.
Then show a backtrace with gdb

What went wrong?
Im debugging Android apps on ARC, in x86 Chromebook.
When ARC clashed, I got a message "plugin crashed: captured minidump" from chrome console.
But I cannot find the directory of minidump file(.dmp).

In the reference(https://www.chromium.org/chromium-os/packages/crash-reporting/debugging-a-minidump),
minidumpfile is in ~/chromiumos/chroot/usr/bin/, but the directory is not exist in my chromebook.
(in "usr/bin", only found "core2md, minidump-2-core, minidump_upload, minidump_dump, minidump_stackwalk")

I tried "Generate core file command" in reference, but received error message
"cannot create minidump.core: Read-only file system".

Did this work before? N/A 

Chrome version: 48.0.2564.116  Channel: stable
OS Version: 7647.84.0
Flash Version: Shockwave Flash 20.0 r0

I submitted this problem to stackoverflow.
http://stackoverflow.com/questions/36006098/where-to-arc-welder-extrude-minidump-file-dmp