Fix generation of Xcode project.

Fix generation of Xcode project.

Issue https://codereview.chromium.org/2005483002 changed the code to
use FindExtension() instead of base::FilePath::Extension() but did
not accomodate for the fact that the extension is now returned without
the leading dot.

Fix this by changed all the extension values used for comparison to
not include the leading dot either. This restore the source indexation
when opening the project with Xcode.

BUG=297668
Committed: https://crrev.com/63a623cc29066ad0e3c4974851c2e8a56a012f7a
Cr-Commit-Position: refs/heads/master@{#398584}

[sdefresne, 2016-06-08 08:28:40]

sdefresne@chromium.org changed reviewers:
+ brettw@chromium.org

[sdefresne, 2016-06-08 08:28:41]

Please take a look and send to CQ if LGTY.

[Dirk Pranke, 2016-06-08 16:03:37]

dpranke@chromium.org changed reviewers:
+ dpranke@chromium.org

[Dirk Pranke, 2016-06-08 16:03:37]

lgtm

[Dirk Pranke, 2016-06-08 16:03:43]

The CQ bit was checked by dpranke@chromium.org

[commit-bot: I haz the power, 2016-06-08 16:04:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2046373002/1

[commit-bot: I haz the power, 2016-06-08 16:09:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-08 16:12:48]

Description was changed from

==========
Fix generation of Xcode project.

Issue https://codereview.chromium.org/2005483002 changed the code to
use FindExtension() instead of base::FilePath::Extension() but did
not accomodate for the fact that the extension is now returned without
the leading dot.

Fix this by changed all the extension values used for comparison to
not include the leading dot either. This restore the source indexation
when opening the project with Xcode.

BUG=297668
==========

to

==========
Fix generation of Xcode project.

Issue https://codereview.chromium.org/2005483002 changed the code to
use FindExtension() instead of base::FilePath::Extension() but did
not accomodate for the fact that the extension is now returned without
the leading dot.

Fix this by changed all the extension values used for comparison to
not include the leading dot either. This restore the source indexation
when opening the project with Xcode.

BUG=297668

Committed: https://crrev.com/63a623cc29066ad0e3c4974851c2e8a56a012f7a
Cr-Commit-Position: refs/heads/master@{#398584}
==========

[commit-bot: I haz the power, 2016-06-08 16:12:50]

Patchset 1 (id:??) landed as
https://crrev.com/63a623cc29066ad0e3c4974851c2e8a56a012f7a
Cr-Commit-Position: refs/heads/master@{#398584}