cc: Allow fully solid layers to contribute their pixels to quad_data.visible_content_area

cc: Allow fully solid layers to contribute pixels for telemetry

The theory is that some of the tests that check
mean_pixels_approximated could become worse after my change
because PLI's drawn as solid color were not adding its drawn
pixels into the calculation.  I can't replicate the test,
possibly due to lack of throttling on my phone, so the plan is
to commit this change and see if the tests go back to normal.

Even if it doesn't improve the test, the change is correct and
should be committed regardless.

BUG=416446
Committed: https://crrev.com/3c37dba2da292e0342d39731d6fe558340521bb5
Cr-Commit-Position: refs/heads/master@{#297087}

[hendrikw, 2014-09-26 18:16:46]

hendrikw@chromium.org changed reviewers:
+ danakj@chromium.org, ernstm@chromium.org

[hendrikw, 2014-09-26 18:16:48]

PTAL

[ernstm, 2014-09-26 18:41:02]

On 2014/09/26 18:16:48, Hendrik wrote:
> PTAL

LGTM

[danakj, 2014-09-26 22:06:09]

LGTM

[danakj, 2014-09-26 22:06:12]

The CQ bit was checked by danakj@chromium.org

[commit-bot: I haz the power, 2014-09-26 22:07:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/607063003/1

[commit-bot: I haz the power, 2014-09-27 00:53:05]

Committed patchset #1 (id:1) as 7b800b173d46514841b6476956ea83b7fef4cc97

[commit-bot: I haz the power, 2014-09-27 00:54:03]

Patchset 1 (id:??) landed as
https://crrev.com/3c37dba2da292e0342d39731d6fe558340521bb5
Cr-Commit-Position: refs/heads/master@{#297087}