[Chromoting] Update build-webapp to accept a filelist & update GN rules

[Chromoting] Update build-webapp to accept a filelist & update GN rules

This cl:
* Adds file list support to build-webapp.py
* Update teh GN webapp build rules to build/pass a filelist
* Enable the GN webapp build for Windows

This change is motivated by enabling the remoting webapp build on
Windows, which has a limit on the size of the command line. This
limit was encountered with the Windows GN build.

The corresponding GYP build files are not updated (even though GYP
has support for building filelists via the <| syntax) because our
files have GYP paths in them that get written into the file rather
than being expanded. Fixing this is not worth the time since we're
moving away from our GYP builds.

BUG=

Committed: https://crrev.com/c9f083641d5b6614195aa6561d82776dd668323d
Cr-Commit-Position: refs/heads/master@{#326959}

[garykac, 2015-04-23 14:44:26]

garykac@chromium.org changed reviewers:
+ jamiewalch@chromium.org

[garykac, 2015-04-24 23:46:13]

On 2015/04/23 14:44:27, garykac wrote:

ping!

[Jamie, 2015-04-24 23:51:49]

lgtm

https://codereview.chromium.org/1107483002/diff/20001/remoting/webapp/build-w...
File remoting/webapp/build-webapp.py (right):

https://codereview.chromium.org/1107483002/diff/20001/remoting/webapp/build-w...
remoting/webapp/build-webapp.py:136: line, identifying the resources to include
in this webapp. This
Nit: Indentation.

[garykac, 2015-04-25 00:23:14]

The CQ bit was checked by garykac@chromium.org

[garykac, 2015-04-25 00:23:15]

The patchset sent to the CQ was uploaded after l-g-t-m from
jamiewalch@chromium.org
Link to the patchset: https://codereview.chromium.org/1107483002/#ps40001
(title: "Fix indent")

[commit-bot: I haz the power, 2015-04-25 00:23:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1107483002/40001

[commit-bot: I haz the power, 2015-04-25 04:53:48]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-04-25 04:55:56]

Patchset 3 (id:??) landed as
https://crrev.com/c9f083641d5b6614195aa6561d82776dd668323d
Cr-Commit-Position: refs/heads/master@{#326959}

[garykac, 2015-04-27 15:36:16]

https://codereview.chromium.org/1107483002/diff/20001/remoting/webapp/build-w...
File remoting/webapp/build-webapp.py (right):

https://codereview.chromium.org/1107483002/diff/20001/remoting/webapp/build-w...
remoting/webapp/build-webapp.py:136: line, identifying the resources to include
in this webapp. This
On 2015/04/24 23:51:49, Jamie wrote:
> Nit: Indentation.

Done.