[Chromecast] Clear cached video plane geometry parameters and don't run

[Chromecast] Clear cached video plane geometry parameters and don't run
SetGeometry when graphics plane resolution changes.

Reasons for this:
* When switching to an app with a different graphics plane
  resolution, the old video plane geometry parameters are now
  invalid since they were relative to the previous graphics
  plane.
* SetGeometry should not always be run when the graphics
  plane resolution changes because some apps (like Backdrop)
  don't have a video element.

BUG=internal b/27554486
TEST=All tests run on dragonfly
     * Switch Youtube -> Backdrop. No SetGeometry calls are made
       after switching to Backdrop.
     * Switch Youtube -> Netflix. SetGeometry calls are made for
       Netflix playback.
     * Revoke resources while playing Youtube video. Then grant
       resources and playback same Youtube video. SetGeometry
       call is made when Youtube video is played again.

Committed: https://crrev.com/f53fdccff6804b1a262551898ddb11ad6d9e336c
Cr-Commit-Position: refs/heads/master@{#383839}

[esum, 2016-03-29 03:49:45]

esum@chromium.org changed reviewers:
+ erickung@chromium.org, gfhuang@chromium.org, halliwell@chromium.org

[halliwell, 2016-03-29 13:28:43]

On 2016/03/29 03:49:46, esum wrote:

lgtm.  I'd like to add some tests for this class, but feel free to file a
follow-up ticket for that to get the fix in.

[esum, 2016-03-29 20:56:03]

On 2016/03/29 13:28:43, halliwell wrote:
> On 2016/03/29 03:49:46, esum wrote:
> 
> lgtm.  I'd like to add some tests for this class, but feel free to file a
> follow-up ticket for that to get the fix in.

Made b/27903820 for unit tests.

[esum, 2016-03-29 20:56:08]

The CQ bit was checked by esum@chromium.org

[commit-bot: I haz the power, 2016-03-29 20:57:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1838863004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1838863004/1

[commit-bot: I haz the power, 2016-03-29 21:52:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-29 21:53:32]

Description was changed from

==========
[Chromecast] Clear cached video plane geometry parameters and don't run
SetGeometry when graphics plane resolution changes.

Reasons for this:
* When switching to an app with a different graphics plane
  resolution, the old video plane geometry parameters are now
  invalid since they were relative to the previous graphics
  plane.
* SetGeometry should not always be run when the graphics
  plane resolution changes because some apps (like Backdrop)
  don't have a video element.

BUG=internal b/27554486
TEST=All tests run on dragonfly
     * Switch Youtube -> Backdrop. No SetGeometry calls are made
       after switching to Backdrop.
     * Switch Youtube -> Netflix. SetGeometry calls are made for
       Netflix playback.
     * Revoke resources while playing Youtube video. Then grant
       resources and playback same Youtube video. SetGeometry
       call is made when Youtube video is played again.
==========

to

==========
[Chromecast] Clear cached video plane geometry parameters and don't run
SetGeometry when graphics plane resolution changes.

Reasons for this:
* When switching to an app with a different graphics plane
  resolution, the old video plane geometry parameters are now
  invalid since they were relative to the previous graphics
  plane.
* SetGeometry should not always be run when the graphics
  plane resolution changes because some apps (like Backdrop)
  don't have a video element.

BUG=internal b/27554486
TEST=All tests run on dragonfly
     * Switch Youtube -> Backdrop. No SetGeometry calls are made
       after switching to Backdrop.
     * Switch Youtube -> Netflix. SetGeometry calls are made for
       Netflix playback.
     * Revoke resources while playing Youtube video. Then grant
       resources and playback same Youtube video. SetGeometry
       call is made when Youtube video is played again.

Committed: https://crrev.com/f53fdccff6804b1a262551898ddb11ad6d9e336c
Cr-Commit-Position: refs/heads/master@{#383839}
==========

[commit-bot: I haz the power, 2016-03-29 21:53:33]

Patchset 1 (id:??) landed as
https://crrev.com/f53fdccff6804b1a262551898ddb11ad6d9e336c
Cr-Commit-Position: refs/heads/master@{#383839}