Fix PepperView to let PPAPI up-scale on high-DPI devices where possible.

Fix PepperView to let PPAPI up-scale on high-DPI devices where possible.

Previously PepperView would always render at device resolution, requiring the
Chromoting video decode pipeline to up- or down-scale as necessary.

This CL lets PPAPI up-scale for high-DPI if the plugin's logical dimensions
match those of the source, both reducing Chromoting's rendering overhead in
and improving output quality for this case.

BUG=163228
TEST=Connect to a host from a high-DPI client and verify that monochrome, un-anti-aliased text displayed at the host is lovely and crisp and readable.


Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=173807

[Wez, 2012-12-18 04:45:03]

PTAL

[Jamie, 2012-12-18 19:45:32]

lgtm

https://chromiumcodereview.appspot.com/11570058/diff/1/remoting/client/plugin...
File remoting/client/plugin/pepper_view.cc (left):

https://chromiumcodereview.appspot.com/11570058/diff/1/remoting/client/plugin...
remoting/client/plugin/pepper_view.cc:92: // is lousy, so we don't.
I take it this comment is no longer true?

[Wez, 2012-12-18 19:47:23]

https://chromiumcodereview.appspot.com/11570058/diff/1/remoting/client/plugin...
File remoting/client/plugin/pepper_view.cc (left):

https://chromiumcodereview.appspot.com/11570058/diff/1/remoting/client/plugin...
remoting/client/plugin/pepper_view.cc:92: // is lousy, so we don't.
On 2012/12/18 19:45:32, Jamie wrote:
> I take it this comment is no longer true?

No; it's still true for non-integer scale factors but for integer factors
Graphics2D scaling is preferable since it hasn't the same sub-sampling errors.

[commit-bot: I haz the power, 2012-12-18 19:49:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/wez@chromium.org/11570058/1

[commit-bot: I haz the power, 2012-12-18 23:59:51]

Change committed as 173807