Fix a minor bug in compressedTex{Sub}Image in blink.

Fix a minor bug in compressedTex{Sub}Image in blink.

The issue is in error case, we should return early instead of calling into
lower level APIs. Otherwise out-of-bounds visits happen.

BUG=664643
TEST=asan build with views-with-offsets.html
R=kbr@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Committed: https://crrev.com/1fa298aceb14ff8370addedf502c9fdf7a6f3a1f
Cr-Commit-Position: refs/heads/master@{#432072}

[Zhenyao Mo, 2016-11-15 00:58:24]

Description was changed from

==========
Fix a minor bug in compressedTex{Sub}Image in blink.

The issue is in error case, we should return early instead of calling into
lower level APIs. Otherwise out-of-bounds visits happen.

BUG=664643
TEST=asan build with views-with-offsets.html
R=kbr@chromium.org
==========

to

==========
Fix a minor bug in compressedTex{Sub}Image in blink.

The issue is in error case, we should return early instead of calling into
lower level APIs. Otherwise out-of-bounds visits happen.

BUG=664643
TEST=asan build with views-with-offsets.html
R=kbr@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
==========

[Zhenyao Mo, 2016-11-15 00:58:34]

The CQ bit was checked by zmo@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-15 00:59:22]

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

[Ken Russell (switch to Gerrit), 2016-11-15 01:00:13]

Thank you for tracking this down!!! LGTM

[Zhenyao Mo, 2016-11-15 01:01:55]

The CQ bit was unchecked by zmo@chromium.org

[Zhenyao Mo, 2016-11-15 01:01:59]

The CQ bit was checked by zmo@chromium.org

[commit-bot: I haz the power, 2016-11-15 01:03:00]

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, 2016-11-15 03:36:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-15 03:43:23]

Description was changed from

==========
Fix a minor bug in compressedTex{Sub}Image in blink.

The issue is in error case, we should return early instead of calling into
lower level APIs. Otherwise out-of-bounds visits happen.

BUG=664643
TEST=asan build with views-with-offsets.html
R=kbr@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
==========

to

==========
Fix a minor bug in compressedTex{Sub}Image in blink.

The issue is in error case, we should return early instead of calling into
lower level APIs. Otherwise out-of-bounds visits happen.

BUG=664643
TEST=asan build with views-with-offsets.html
R=kbr@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Committed: https://crrev.com/1fa298aceb14ff8370addedf502c9fdf7a6f3a1f
Cr-Commit-Position: refs/heads/master@{#432072}
==========

[commit-bot: I haz the power, 2016-11-15 03:43:24]

Patchset 1 (id:??) landed as
https://crrev.com/1fa298aceb14ff8370addedf502c9fdf7a6f3a1f
Cr-Commit-Position: refs/heads/master@{#432072}