Treat add events for known files as modifications instead of discarding them on Mac OS. Fixes pub s…

Treat add events for known files as modifications instead of discarding them on Mac OS. Fixes pub serve not seeing files saved in IntelliJ or other tools that use "safe" writes.

https://code.google.com/p/dart/issues/detail?id=21402

R=ajohnsen@google.com, nweiz@google.com

Committed: https://github.com/dart-lang/watcher/commit/74225b45b340228bcf6d3ead2b6f719eeeade924

[Bob Nystrom, 2015-01-22 00:15:47]

rnystrom@google.com changed reviewers:
+ ajohnsen@google.com, nweiz@google.com

[Bob Nystrom, 2015-01-22 00:15:47]

After this lands, I'll publish it and bring it into the repo for pub.

[nweiz, 2015-01-22 00:20:19]

lgtm

https://codereview.chromium.org/861313006/diff/1/lib/src/directory_watcher/ma...
File lib/src/directory_watcher/mac_os.dart (right):

https://codereview.chromium.org/861313006/diff/1/lib/src/directory_watcher/ma...
lib/src/directory_watcher/mac_os.dart:182: // If we already know about the file,
treat it like a modification.
"treat it" -> "treat an ADD event"

[Anders Johnsen, 2015-01-22 10:03:13]

lgtm

[Bob Nystrom, 2015-01-22 17:49:00]

Committed patchset #1 (id:1) manually as
74225b45b340228bcf6d3ead2b6f719eeeade924 (presubmit successful).