cc: Fix non root copy request visible rect in HighDPI

cc: Fix non root copy request visible rect in HighDPI

Before while transform clip into layer space, incorrectly used wrong
helper function and applied device scale twice. Create correct helper
function and add unittest.

BUG=622083
R=ajuma
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Committed: https://crrev.com/296dd9f02b09445ad5976396a86c00ff3181c253
Cr-Commit-Position: refs/heads/master@{#403782}

[weiliangc, 2016-07-04 21:53:47]

Description was changed from

==========
cc: Fix non root copy request visible rect in HighDPI

Before while transform clip into layer space, incorrectly used wrong
helper function and applied device scale twice. Create correct helper
function and add unittest.

BUG=622083
R=ajuma
==========

to

==========
cc: Fix non root copy request visible rect in HighDPI

Before while transform clip into layer space, incorrectly used wrong
helper function and applied device scale twice. Create correct helper
function and add unittest.

BUG=622083
R=ajuma
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
==========

[ajuma, 2016-07-04 23:11:42]

lgtm

[weiliangc, 2016-07-05 14:27:38]

The CQ bit was checked by weiliangc@chromium.org

[commit-bot: I haz the power, 2016-07-05 14:27:57]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-05 15:00:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-05 15:00:12]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-05 15:01:27]

Description was changed from

==========
cc: Fix non root copy request visible rect in HighDPI

Before while transform clip into layer space, incorrectly used wrong
helper function and applied device scale twice. Create correct helper
function and add unittest.

BUG=622083
R=ajuma
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
==========

to

==========
cc: Fix non root copy request visible rect in HighDPI

Before while transform clip into layer space, incorrectly used wrong
helper function and applied device scale twice. Create correct helper
function and add unittest.

BUG=622083
R=ajuma
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Committed: https://crrev.com/296dd9f02b09445ad5976396a86c00ff3181c253
Cr-Commit-Position: refs/heads/master@{#403782}
==========

[commit-bot: I haz the power, 2016-07-05 15:01:27]

Patchset 1 (id:??) landed as
https://crrev.com/296dd9f02b09445ad5976396a86c00ff3181c253
Cr-Commit-Position: refs/heads/master@{#403782}