Fix a bug in `gn analyze` related to build-only changes.

Fix a bug in `gn analyze` related to build-only changes.

`gn analyze` would incorrectly claim that no compile was necessary
if given a list of files that included build file changes but not
any source file changes.

R=brettw@chromium.org
BUG=648448
Committed: https://crrev.com/253b1190a67b4ccac5c8b2583e6b19c6a1c5e3f9
Cr-Commit-Position: refs/heads/master@{#419662}

[Dirk Pranke, 2016-09-19 23:22:41]

Description was changed from

==========
Fix a bug in `gn analyze`.

`gn analyze` would incorrectly claim that no compile was necessary
if given a list of files that included build file changes but not
any source file changes.

R=brettw@chromium.org
BUG=648448
==========

to

==========
Fix a bug in `gn analyze` related to build-only changes.

`gn analyze` would incorrectly claim that no compile was necessary
if given a list of files that included build file changes but not
any source file changes.

R=brettw@chromium.org
BUG=648448
==========

[Dirk Pranke, 2016-09-19 23:22:59]

The CQ bit was checked by dpranke@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-19 23:23:19]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[brettw, 2016-09-19 23:32:01]

lgtm

[commit-bot: I haz the power, 2016-09-20 01:13:44]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-20 01:13:45]

Dry run: This issue passed the CQ dry run.

[Dirk Pranke, 2016-09-20 02:48:30]

The CQ bit was checked by dpranke@chromium.org

[commit-bot: I haz the power, 2016-09-20 02:48:43]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-20 02:53:13]

Description was changed from

==========
Fix a bug in `gn analyze` related to build-only changes.

`gn analyze` would incorrectly claim that no compile was necessary
if given a list of files that included build file changes but not
any source file changes.

R=brettw@chromium.org
BUG=648448
==========

to

==========
Fix a bug in `gn analyze` related to build-only changes.

`gn analyze` would incorrectly claim that no compile was necessary
if given a list of files that included build file changes but not
any source file changes.

R=brettw@chromium.org
BUG=648448
==========

[commit-bot: I haz the power, 2016-09-20 02:53:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-20 02:55:39]

Description was changed from

==========
Fix a bug in `gn analyze` related to build-only changes.

`gn analyze` would incorrectly claim that no compile was necessary
if given a list of files that included build file changes but not
any source file changes.

R=brettw@chromium.org
BUG=648448
==========

to

==========
Fix a bug in `gn analyze` related to build-only changes.

`gn analyze` would incorrectly claim that no compile was necessary
if given a list of files that included build file changes but not
any source file changes.

R=brettw@chromium.org
BUG=648448

Committed: https://crrev.com/253b1190a67b4ccac5c8b2583e6b19c6a1c5e3f9
Cr-Commit-Position: refs/heads/master@{#419662}
==========

[commit-bot: I haz the power, 2016-09-20 02:55:40]

Patchset 1 (id:??) landed as
https://crrev.com/253b1190a67b4ccac5c8b2583e6b19c6a1c5e3f9
Cr-Commit-Position: refs/heads/master@{#419662}