Fix a crash when downloading a dangerous download

Fix a crash when downloading a dangerous download

When downloading a dangerous download, Chrome should show an infobar in current tab.
However, the java side only checks the filename for dangerous download.
As a result, in some cases it may close a blank tab even if the download is dangerous.
That causes the download to be removed and cause a crash when returning to the caller.

BUG=667215
Committed: https://crrev.com/abc63973a87249b44623b0744c2efdf9c6bbfa5c
Cr-Commit-Position: refs/heads/master@{#441266}

[qinmin, 2017-01-03 23:01:12]

qinmin@chromium.org changed reviewers:
+ dtrainor@chromium.org

[qinmin, 2017-01-03 23:01:13]

PTAL

[David Trainor- moved to gerrit, 2017-01-03 23:26:31]

lgtm

[qinmin, 2017-01-03 23:53:35]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2017-01-03 23:54:03]

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, 2017-01-04 00:27:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483487615939830, "parent_rev":
"62bafaf9f4209ada12fd6973a7475e89b225d790", "commit_rev":
"00d77c246177da29a781f49daed17f4a5d3e332c"}

[commit-bot: I haz the power, 2017-01-04 00:27:56]

Description was changed from

==========
Fix a crash when downloading a dangerous download

When downloading a dangerous download, Chrome should show an infobar in current
tab.
However, the java side only checks the filename for dangerous download.
As a result, in some cases it may close a blank tab even if the download is
dangerous.
That causes the download to be removed and cause a crash when returning to the
caller.

BUG=667215
==========

to

==========
Fix a crash when downloading a dangerous download

When downloading a dangerous download, Chrome should show an infobar in current
tab.
However, the java side only checks the filename for dangerous download.
As a result, in some cases it may close a blank tab even if the download is
dangerous.
That causes the download to be removed and cause a crash when returning to the
caller.

BUG=667215

Review-Url: https://codereview.chromium.org/2609113004
==========

[commit-bot: I haz the power, 2017-01-04 00:27:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2017-01-04 00:30:14]

Description was changed from

==========
Fix a crash when downloading a dangerous download

When downloading a dangerous download, Chrome should show an infobar in current
tab.
However, the java side only checks the filename for dangerous download.
As a result, in some cases it may close a blank tab even if the download is
dangerous.
That causes the download to be removed and cause a crash when returning to the
caller.

BUG=667215

Review-Url: https://codereview.chromium.org/2609113004
==========

to

==========
Fix a crash when downloading a dangerous download

When downloading a dangerous download, Chrome should show an infobar in current
tab.
However, the java side only checks the filename for dangerous download.
As a result, in some cases it may close a blank tab even if the download is
dangerous.
That causes the download to be removed and cause a crash when returning to the
caller.

BUG=667215

Committed: https://crrev.com/abc63973a87249b44623b0744c2efdf9c6bbfa5c
Cr-Commit-Position: refs/heads/master@{#441266}
==========

[commit-bot: I haz the power, 2017-01-04 00:30:15]

Patchset 1 (id:??) landed as
https://crrev.com/abc63973a87249b44623b0744c2efdf9c6bbfa5c
Cr-Commit-Position: refs/heads/master@{#441266}