Don't readback and reupload texture-backed bitmaps

Don't readback and reupload texture-backed bitmaps

Committed: https://skia.googlesource.com/skia/+/b9ab5631703c258f1aae7a3ca1bb4b6596b5b42c

[bsalomon, 2014-10-06 20:20:56]

bsalomon@google.com changed reviewers:
+ robertphillips@google.com

[bsalomon, 2014-10-06 20:24:04]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2014-10-06 20:24:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/635573004/1

[commit-bot: I haz the power, 2014-10-06 20:24:19]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2014-10-07 02:24 UTC

[commit-bot: I haz the power, 2014-10-06 21:50:17]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-06 21:50:18]

Try jobs failed on following builders:
  Build-Mac10.8-Clang-x86_64-Release-Trybot on tryserver.skia
(http://108.170.220.76:10117/builders/Build-Mac10.8-Clang-x86_64-Release-Trybo...)

[bsalomon, 2014-10-07 00:59:27]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2014-10-07 01:00:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/635573004/1

[commit-bot: I haz the power, 2014-10-07 01:00:58]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2014-10-07 07:00 UTC

[commit-bot: I haz the power, 2014-10-07 07:00:58]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-07 07:00:58]

No LGTM from a valid reviewer yet. Please ask for an LGTM from a
full Skia committer from
https://skia.googlesource.com/skia/+/master/CQ_COMMITTERS

[robertphillips, 2014-10-07 12:18:13]

lgtm

[robertphillips, 2014-10-07 12:18:15]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-10-07 12:19:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/635573004/1

[commit-bot: I haz the power, 2014-10-07 12:19:28]

Committed patchset #1 (id:1) as b9ab5631703c258f1aae7a3ca1bb4b6596b5b42c

[bsalomon, 2014-10-07 13:19:32]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/632293002/ by bsalomon@google.com.

The reason for reverting is: This fails on some Android devices, missing part of
tileimagefilter GM which were previously triggering the readback/upload code
path..