Revert the change to render thumbnail in CANVAS mode for fixing regression.

Change the drag thumbnail rendering back to IMAGE mode to fix a regression.

Here is the change that caused crbug.com/681796. This changelist partially reverts its change that affected drag thumbnail rendering.
https://codereview.chromium.org/2630283002/

When an item is rendered in CANVAS mode, some metadata field are not
filled unlike IMAGE mode. It causes unexpected execution path and
outputs an error when clicking on a non-image file whose thumbnail is
not yet cached.

BUG=681796, 680420
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2641743002
Cr-Commit-Position: refs/heads/master@{#444311}
Committed: https://chromium.googlesource.com/chromium/src/+/461ae5544464cdc9d3429311f553568f95da2b2a

[yamaguchi, 2017-01-18 06:40:46]

Description was changed from

==========
Revert the change to render thumbnail in CANVAS mode for fixing regression.

When the item is rendered in CANVAS mode, some more metadata field are not
filled unlike IMAGE mode. It causes unexpected execution path and outputs
error when clicking on a non-image file.

BUG=681796,680420
==========

to

==========
Revert the change to render thumbnail in CANVAS mode for fixing regression.

When the item is rendered in CANVAS mode, some more metadata field are not
filled unlike IMAGE mode. It causes unexpected execution path and outputs
error when clicking on a non-image file.

BUG=681796,680420
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
==========

[yamaguchi, 2017-01-18 06:40:59]

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

[commit-bot: I haz the power, 2017-01-18 06:41:13]

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

[yamaguchi, 2017-01-18 06:45:04]

Description was changed from

==========
Revert the change to render thumbnail in CANVAS mode for fixing regression.

When the item is rendered in CANVAS mode, some more metadata field are not
filled unlike IMAGE mode. It causes unexpected execution path and outputs
error when clicking on a non-image file.

BUG=681796,680420
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
==========

to

==========
Change the drag thumbnail rendering back to IMAGE mode to fix a regression.

Here is the change that caused crbug.com/681796. This changelist partially
reverts its change that affected drag thumbnail rendering.
https://codereview.chromium.org/2630283002/

When an item is rendered in CANVAS mode, some metadata field are not
filled unlike IMAGE mode. It causes unexpected execution path and
outputs an error when clicking on a non-image file whose thumbnail is
not yet cached.

BUG=681796,680420
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
==========

[yamaguchi, 2017-01-18 06:45:31]

yamaguchi@chromium.org changed reviewers:
+ fukino@chromium.org

[yamaguchi, 2017-01-18 06:45:31]

ptal

[commit-bot: I haz the power, 2017-01-18 07:04:53]

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

[commit-bot: I haz the power, 2017-01-18 07:04:54]

Dry run: This issue passed the CQ dry run.

[fukino, 2017-01-18 08:04:05]

lgtm

[yamaguchi, 2017-01-18 09:22:17]

The CQ bit was checked by yamaguchi@chromium.org

[commit-bot: I haz the power, 2017-01-18 09:22:33]

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, 2017-01-18 09:25:56]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484731337335670, "parent_rev":
"1724f97e1dc9533f2c0cd7d67a78c8b04ff78c54", "commit_rev":
"461ae5544464cdc9d3429311f553568f95da2b2a"}

[commit-bot: I haz the power, 2017-01-18 09:26:23]

Description was changed from

==========
Change the drag thumbnail rendering back to IMAGE mode to fix a regression.

Here is the change that caused crbug.com/681796. This changelist partially
reverts its change that affected drag thumbnail rendering.
https://codereview.chromium.org/2630283002/

When an item is rendered in CANVAS mode, some metadata field are not
filled unlike IMAGE mode. It causes unexpected execution path and
outputs an error when clicking on a non-image file whose thumbnail is
not yet cached.

BUG=681796,680420
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
==========

to

==========
Change the drag thumbnail rendering back to IMAGE mode to fix a regression.

Here is the change that caused crbug.com/681796. This changelist partially
reverts its change that affected drag thumbnail rendering.
https://codereview.chromium.org/2630283002/

When an item is rendered in CANVAS mode, some metadata field are not
filled unlike IMAGE mode. It causes unexpected execution path and
outputs an error when clicking on a non-image file whose thumbnail is
not yet cached.

BUG=681796,680420
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2641743002
Cr-Commit-Position: refs/heads/master@{#444311}
Committed:
https://chromium.googlesource.com/chromium/src/+/461ae5544464cdc9d3429311f553...
==========

[commit-bot: I haz the power, 2017-01-18 09:26:24]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/461ae5544464cdc9d3429311f553...