[Cast,Android] Don't assume there's always a matching provider for a route

[Cast,Android] Don't assume there's always a matching provider for a route

After https://codereview.chromium.org/1593313011 the mappings between routes and MRPs are being cleaned up.
Which means that if casting is stopped from the browser UI while the page tried to send a message over, Chrome will crash.

BUG=None
TEST=Manual

Committed: https://crrev.com/eac7a1a3690a64885a70ecfe745ea0990d00efc3
Cr-Commit-Position: refs/heads/master@{#371509}

[whywhat, 2016-01-26 12:08:57]

avayvod@chromium.org changed reviewers:
+ zqzhang@chromium.org

[whywhat, 2016-01-26 12:08:57]

PTaL

[whywhat, 2016-01-26 12:09:27]

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

[commit-bot: I haz the power, 2016-01-26 12:09:48]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1632133006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1632133006/1

[commit-bot: I haz the power, 2016-01-26 12:45:41]

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

[commit-bot: I haz the power, 2016-01-26 12:45:42]

Dry run: This issue passed the CQ dry run.

[mlamouri (slow - plz ping), 2016-01-26 14:31:45]

mlamouri@chromium.org changed reviewers:
+ mlamouri@chromium.org

[mlamouri (slow - plz ping), 2016-01-26 14:31:46]

lgtm

[whywhat, 2016-01-26 14:41:12]

The CQ bit was checked by avayvod@chromium.org

[Zhiqiang Zhang (Slow), 2016-01-26 14:41:24]

lgtm

[commit-bot: I haz the power, 2016-01-26 14:41:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1632133006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1632133006/1

[commit-bot: I haz the power, 2016-01-26 14:45:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-26 14:47:54]

Description was changed from

==========
[Cast,Android] Don't assume there's always a matching provider for a route

After https://codereview.chromium.org/1593313011 the mappings between routes and
MRPs are being cleaned up.
Which means that if casting is stopped from the browser UI while the page tried
to send a message over, Chrome will crash.

BUG=None
TEST=Manual
==========

to

==========
[Cast,Android] Don't assume there's always a matching provider for a route

After https://codereview.chromium.org/1593313011 the mappings between routes and
MRPs are being cleaned up.
Which means that if casting is stopped from the browser UI while the page tried
to send a message over, Chrome will crash.

BUG=None
TEST=Manual

Committed: https://crrev.com/eac7a1a3690a64885a70ecfe745ea0990d00efc3
Cr-Commit-Position: refs/heads/master@{#371509}
==========

[commit-bot: I haz the power, 2016-01-26 14:47:55]

Patchset 1 (id:??) landed as
https://crrev.com/eac7a1a3690a64885a70ecfe745ea0990d00efc3
Cr-Commit-Position: refs/heads/master@{#371509}