[Downloads] Use content:// URIs in more places

[Downloads] Use content:// URIs in more places

* Use content:// URIs in more places instead of file:// URIs.  This avoids
  problems with Android N+ complaining about passing around file:// URIs.

* Allow Intents for Media Viewer Custom Tabs to have an additional URI that can
  override the one passed along via the Intent's data.  The file:// URI is
  necessary to deal with Custom Tabs displaying "content:" and a database ID
  instead of the filename and its location.

BUG=658012
TBR=qinmin,twellington,yusufo
Original-Review-Url: https://codereview.chromium.org/2671573002
Original-Cr-Commit-Position: refs/heads/master@{#447821}

Review-Url: https://codereview.chromium.org/2669243007 .
Cr-Commit-Position: refs/branch-heads/2987@{#285}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/d9e65e42e3965f2b86054c35c381588f6a339403

[gone, 2017-02-02 22:56:19]

Description was changed from

==========
[Downloads] Use content:// URIs in more places

* Use content:// URIs in more places instead of file:// URIs.  This avoids
  problems with Android N+ complaining about passing around file:// URIs.

* Allow Intents for Media Viewer Custom Tabs to have an additional URI that can
  override the one passed along via the Intent's data.  The file:// URI is
  necessary to deal with Custom Tabs displaying "content:" and a database ID
  instead of the filename and its location.

BUG=658012

Review-Url: https://codereview.chromium.org/2671573002
Cr-Commit-Position: refs/heads/master@{#447821}
==========

to

==========
[Downloads] Use content:// URIs in more places

* Use content:// URIs in more places instead of file:// URIs.  This avoids
  problems with Android N+ complaining about passing around file:// URIs.

* Allow Intents for Media Viewer Custom Tabs to have an additional URI that can
  override the one passed along via the Intent's data.  The file:// URI is
  necessary to deal with Custom Tabs displaying "content:" and a database ID
  instead of the filename and its location.

BUG=658012
TBR=qinmin,twellington,yusufo
Original-Review-Url: https://codereview.chromium.org/2671573002
Original-Cr-Commit-Position: refs/heads/master@{#447821}
==========

[gone, 2017-02-02 22:56:19]

dfalcantara@chromium.org changed reviewers:
+ qinmin@chromium.org, twellington@chromium.org, yusufo@chromium.org

[gone, 2017-02-02 23:05:41]

Description was changed from

==========
[Downloads] Use content:// URIs in more places

* Use content:// URIs in more places instead of file:// URIs.  This avoids
  problems with Android N+ complaining about passing around file:// URIs.

* Allow Intents for Media Viewer Custom Tabs to have an additional URI that can
  override the one passed along via the Intent's data.  The file:// URI is
  necessary to deal with Custom Tabs displaying "content:" and a database ID
  instead of the filename and its location.

BUG=658012
TBR=qinmin,twellington,yusufo
Original-Review-Url: https://codereview.chromium.org/2671573002
Original-Cr-Commit-Position: refs/heads/master@{#447821}
==========

to

==========
[Downloads] Use content:// URIs in more places

* Use content:// URIs in more places instead of file:// URIs.  This avoids
  problems with Android N+ complaining about passing around file:// URIs.

* Allow Intents for Media Viewer Custom Tabs to have an additional URI that can
  override the one passed along via the Intent's data.  The file:// URI is
  necessary to deal with Custom Tabs displaying "content:" and a database ID
  instead of the filename and its location.

BUG=658012
TBR=qinmin,twellington,yusufo
Original-Review-Url: https://codereview.chromium.org/2671573002
Original-Cr-Commit-Position: refs/heads/master@{#447821}

Review-Url: https://codereview.chromium.org/2669243007 .
Cr-Commit-Position: refs/branch-heads/2987@{#285}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/d9e65e42e3965f2b86054c35c381...
==========

[gone, 2017-02-02 23:05:42]

Committed patchset #3 (id:40001) manually as
d9e65e42e3965f2b86054c35c381588f6a339403 (presubmit successful).