Switch VP9 lossy encode to CPUUSED=7 and use it by default.

Switch VP9 lossy encode to CPUUSED=7 and use it by default.

Lossy encoding is now reliable enough to be enabled by default when running with VP9.

BUG=260879
Committed: https://crrev.com/b7a2c273f108608748d6b126088e7aa7b78b205b
Cr-Commit-Position: refs/heads/master@{#292680}

[Wez, 2014-08-29 03:12:49]

wez@chromium.org changed reviewers:
+ sergeyu@chromium.org

[Wez, 2014-08-29 03:16:27]

PTAL

[Sergey Ulanov, 2014-08-29 17:38:23]

lgtm

[Wez, 2014-08-29 18:15:53]

The CQ bit was checked by wez@chromium.org

[commit-bot: I haz the power, 2014-08-29 18:16:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/wez@chromium.org/421793003/1

[commit-bot: I haz the power, 2014-08-29 19:22:52]

Committed patchset #1 (id:1) as 11abca25ac11cea5aab3f76a379d4963398eb0bd

[commit-bot: I haz the power, 2014-09-10 03:10:27]

Patchset 1 (id:??) landed as
https://crrev.com/b7a2c273f108608748d6b126088e7aa7b78b205b
Cr-Commit-Position: refs/heads/master@{#292680}