Reland "Refactor download image-MIME-type-detection code."

Reland "Refactor download image-MIME-type-detection code."

Refactor duplicated image-MIME-type-detection code from
DownloadCommands and DownloadItemNotification into a new
DownloadItemModel::HasSupportedImageMimeType() method.

(Relanding since original commit 759969db accidentally
pulled in another change.)

BUG=605805
TBR=rdsmith@chromium.org,svaldez@chromium.org

Committed: https://crrev.com/f849948b4cda2211ef24f1e92916a2cd9f442430
Cr-Commit-Position: refs/heads/master@{#410428}

[Daniel Erat, 2016-08-08 19:06:09]

Description was changed from

==========
Reland "Refactor download image-MIME-type-detection code."

Refactor duplicated image-MIME-type-detection code from
DownloadCommands and DownloadItemNotification into a new
DownloadItemModel::HasSupportedImageMimeType() method.

(Relanding since original commit 759969db accidentally
pulled in another change.)

BUG=605805
==========

to

==========
Reland "Refactor download image-MIME-type-detection code."

Refactor duplicated image-MIME-type-detection code from
DownloadCommands and DownloadItemNotification into a new
DownloadItemModel::HasSupportedImageMimeType() method.

(Relanding since original commit 759969db accidentally
pulled in another change.)

BUG=605805
TBR=rdsmith@chromium.org,svaldez@chromium.org
==========

[Daniel Erat, 2016-08-08 19:12:20]

derat@chromium.org changed reviewers:
+ rdsmith@chromium.org, svaldez@chromium.org

[Daniel Erat, 2016-08-08 19:12:20]

(same as what you reviewed before)

[Daniel Erat, 2016-08-08 19:12:25]

The CQ bit was checked by derat@chromium.org

[commit-bot: I haz the power, 2016-08-08 19:12:48]

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

[svaldez, 2016-08-08 19:16:59]

lgtm

[commit-bot: I haz the power, 2016-08-08 20:21:22]

Description was changed from

==========
Reland "Refactor download image-MIME-type-detection code."

Refactor duplicated image-MIME-type-detection code from
DownloadCommands and DownloadItemNotification into a new
DownloadItemModel::HasSupportedImageMimeType() method.

(Relanding since original commit 759969db accidentally
pulled in another change.)

BUG=605805
TBR=rdsmith@chromium.org,svaldez@chromium.org
==========

to

==========
Reland "Refactor download image-MIME-type-detection code."

Refactor duplicated image-MIME-type-detection code from
DownloadCommands and DownloadItemNotification into a new
DownloadItemModel::HasSupportedImageMimeType() method.

(Relanding since original commit 759969db accidentally
pulled in another change.)

BUG=605805
TBR=rdsmith@chromium.org,svaldez@chromium.org
==========

[commit-bot: I haz the power, 2016-08-08 20:21:23]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-08-08 20:23:40]

Description was changed from

==========
Reland "Refactor download image-MIME-type-detection code."

Refactor duplicated image-MIME-type-detection code from
DownloadCommands and DownloadItemNotification into a new
DownloadItemModel::HasSupportedImageMimeType() method.

(Relanding since original commit 759969db accidentally
pulled in another change.)

BUG=605805
TBR=rdsmith@chromium.org,svaldez@chromium.org
==========

to

==========
Reland "Refactor download image-MIME-type-detection code."

Refactor duplicated image-MIME-type-detection code from
DownloadCommands and DownloadItemNotification into a new
DownloadItemModel::HasSupportedImageMimeType() method.

(Relanding since original commit 759969db accidentally
pulled in another change.)

BUG=605805
TBR=rdsmith@chromium.org,svaldez@chromium.org

Committed: https://crrev.com/f849948b4cda2211ef24f1e92916a2cd9f442430
Cr-Commit-Position: refs/heads/master@{#410428}
==========

[commit-bot: I haz the power, 2016-08-08 20:23:40]

Patchset 2 (id:??) landed as
https://crrev.com/f849948b4cda2211ef24f1e92916a2cd9f442430
Cr-Commit-Position: refs/heads/master@{#410428}