Fix DevFS on Android devices

Fix DevFS on Android devices

- [x] Allow a system temporary directory to be set on Android.
- [x] This is set on Flutter's engine startup path which fixes DevFS on Android devices.

Related to https://github.com/dart-lang/sdk/issues/4413

BUG=
R=rmacnak@google.com

Committed: https://github.com/dart-lang/sdk/commit/b6e17330ed65c616a64831dbfa1027e5eaef47d6

[Cutch, 2016-07-18 16:29:28]

Description was changed from

==========
Allow a valid temporary directory to be set for Android's systemTemp

BUG=
==========

to

==========
Allow a valid temporary directory to be set for Android's systemTemp

BUG=
==========

[Cutch, 2016-07-18 16:29:28]

johnmccutchan@google.com changed reviewers:
+ asiva@google.com

[Cutch, 2016-07-18 16:30:55]

Description was changed from

==========
Allow a valid temporary directory to be set for Android's systemTemp

BUG=
==========

to

==========
Fix DevFS on Android devices

- [x] Allow a system temporary directory to be set on Android.
- [x] This is set on Flutter's engine startup path which fixes DevFS on Android
devices.


BUG=
==========

[Cutch, 2016-07-18 17:41:23]

johnmccutchan@google.com changed reviewers:
+ rmacnak@google.com

[Cutch, 2016-07-18 17:41:35]

+rmacnak

[rmacnak, 2016-07-18 17:41:50]

lgtm

https://codereview.chromium.org/2156243002/diff/1/runtime/bin/directory_andro...
File runtime/bin/directory_android.cc (right):

https://codereview.chromium.org/2156243002/diff/1/runtime/bin/directory_andro...
runtime/bin/directory_android.cc:413: // TODO(4413): In the long run, when
running in an application we should
I'd reference this issue in the commit message.

[Cutch, 2016-07-18 17:44:13]

Description was changed from

==========
Fix DevFS on Android devices

- [x] Allow a system temporary directory to be set on Android.
- [x] This is set on Flutter's engine startup path which fixes DevFS on Android
devices.


BUG=
==========

to

==========
Fix DevFS on Android devices

- [x] Allow a system temporary directory to be set on Android.
- [x] This is set on Flutter's engine startup path which fixes DevFS on Android
devices.

Related to https://github.com/dart-lang/sdk/issues/4413

BUG=
==========

[Cutch, 2016-07-18 17:44:58]

https://codereview.chromium.org/2156243002/diff/1/runtime/bin/directory_andro...
File runtime/bin/directory_android.cc (right):

https://codereview.chromium.org/2156243002/diff/1/runtime/bin/directory_andro...
runtime/bin/directory_android.cc:413: // TODO(4413): In the long run, when
running in an application we should
On 2016/07/18 17:41:49, rmacnak wrote:
> I'd reference this issue in the commit message.

Done.

[Cutch, 2016-07-18 17:45:58]

Description was changed from

==========
Fix DevFS on Android devices

- [x] Allow a system temporary directory to be set on Android.
- [x] This is set on Flutter's engine startup path which fixes DevFS on Android
devices.

Related to https://github.com/dart-lang/sdk/issues/4413

BUG=
==========

to

==========
Fix DevFS on Android devices

- [x] Allow a system temporary directory to be set on Android.
- [x] This is set on Flutter's engine startup path which fixes DevFS on Android
devices.

Related to https://github.com/dart-lang/sdk/issues/4413

BUG=
R=rmacnak@google.com

Committed:
https://github.com/dart-lang/sdk/commit/b6e17330ed65c616a64831dbfa1027e5eaef47d6
==========

[Cutch, 2016-07-18 17:46:00]

Committed patchset #1 (id:1) manually as
b6e17330ed65c616a64831dbfa1027e5eaef47d6 (presubmit successful).