Increase output quality of scaler from FAST to GOOD

Increase output quality of scaler from FAST to GOOD

The android implementation already uses the GOOD quality, rather than FAST.

This positively affects the quality of the thumbnails shown on the New Tab Page.

Description of GOOD, from code comments:
Bilinear upscale + N * 50% bilinear downscales.
This is still fast enough for most purposes and
Image quality is nearly as good as the BEST option.

BUG=481978
Committed: https://crrev.com/f3f6f746e858929c2a2da07b48e509348f84d2c7
Cr-Commit-Position: refs/heads/master@{#327377}

[Mathieu, 2015-04-28 14:29:47]

mathp@chromium.org changed reviewers:
+ jbauman@chromium.org

[Mathieu, 2015-04-28 14:30:53]

Hello, please have a look, thanks.

[Mathieu, 2015-04-28 14:35:17]

mathp@chromium.org changed reviewers:
+ luken@chromium.org

[Mathieu, 2015-04-28 14:36:27]

On 2015/04/28 14:30:53, Mathieu Perreault wrote:
> Hello, please have a look, thanks.

+luken who AFAICT is the other user of
DelegatedFrameHost::CopyFromCompositingSurface which will be affected by this
move from FAST->GOOD scaling.

[danakj, 2015-04-28 17:05:41]

danakj@chromium.org changed reviewers:
+ danakj@chromium.org, hubbe@chromium.org

[danakj, 2015-04-28 17:05:42]

+hubbe

[hubbe, 2015-04-28 17:27:16]

LGTM

I'm not an OWNER, but this seems like a good idea to me.
GOOD is generally pretty fast, but can take a few (~3-5) ms on low-end hardware.
For an operation that isn't done every frame, and where quality is fairly
important that seems like  worthwhile trade-off to me.

[jbauman, 2015-04-28 19:16:08]

lgtm

[Mathieu, 2015-04-28 20:43:39]

The CQ bit was checked by mathp@chromium.org

[commit-bot: I haz the power, 2015-04-28 20:44:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1115433002/1

[commit-bot: I haz the power, 2015-04-28 22:24:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-28 22:25:39]

Patchset 1 (id:??) landed as
https://crrev.com/f3f6f746e858929c2a2da07b48e509348f84d2c7
Cr-Commit-Position: refs/heads/master@{#327377}