Check for primaryFont in LayoutTextControl::getAvgCharWidth

Check for primaryFont in LayoutTextControl::getAvgCharWidth

Change LayoutTextControl::getAvgCharWidth to check if primaryFont is set
before attempting to access it falling back on measuring the width of 0.

BUG=627818
R=cbiesinger@chromium.org

Committed: https://crrev.com/c37d7c08fe436fe0f53245eff661ada8c420a849
Cr-Commit-Position: refs/heads/master@{#405355}

[cbiesinger, 2016-07-13 18:12:39]

lgtm. This did not affect any tests?

[eae, 2016-07-13 20:58:36]

The CQ bit was checked by eae@chromium.org

[eae, 2016-07-13 20:58:37]

The patchset sent to the CQ was uploaded after l-g-t-m from
cbiesinger@chromium.org
Link to the patchset: https://codereview.chromium.org/2149683002/#ps20001
(title: "Rebase w/HEAD")

[commit-bot: I haz the power, 2016-07-13 21:00:20]

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, 2016-07-13 22:44:47]

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

[commit-bot: I haz the power, 2016-07-13 22:44:48]

Try jobs failed on following builders:
  win_chromium_x64_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[eae, 2016-07-13 23:18:35]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2016-07-13 23:19:35]

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, 2016-07-13 23:59:44]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-07-14 00:01:04]

Description was changed from

==========
Check for primaryFont in LayoutTextControl::getAvgCharWidth

Change LayoutTextControl::getAvgCharWidth to check if primaryFont is set
before attempting to access it falling back on measuring the width of 0.

BUG=627818
R=cbiesinger@chromium.org
==========

to

==========
Check for primaryFont in LayoutTextControl::getAvgCharWidth

Change LayoutTextControl::getAvgCharWidth to check if primaryFont is set
before attempting to access it falling back on measuring the width of 0.

BUG=627818
R=cbiesinger@chromium.org

Committed: https://crrev.com/c37d7c08fe436fe0f53245eff661ada8c420a849
Cr-Commit-Position: refs/heads/master@{#405355}
==========

[commit-bot: I haz the power, 2016-07-14 00:01:06]

Patchset 2 (id:??) landed as
https://crrev.com/c37d7c08fe436fe0f53245eff661ada8c420a849
Cr-Commit-Position: refs/heads/master@{#405355}

[eae, 2016-07-14 23:37:32]

Patchset #3 (id:40001) has been deleted