Enables EXTERNAL_COMPONENT extensions in incognito by default.

Enables EXTERNAL_COMPONENT extensions in incognito by default.

Currently, the Media Router is in a broken state in incognito: it can talk to the component via the Mojo API, but access to resources (like the Cast SDK, feedbak, and setup) and tab capture is broken.  This enables the component in incognito via the extensions system which resolves these issues.

BUG=606495
Review-Url: https://codereview.chromium.org/1991263003
Cr-Commit-Position: refs/heads/master@{#395758}
(cherry picked from commit 4193cc61735abc6d53edb85021222d5e866c2c6d)

Committed: https://chromium.googlesource.com/chromium/src/+/4f9a72e8b1774a4eba32c2eb9adb6fe10479c2bf

[mark a. foltz, 2016-05-26 22:40:17]

Description was changed from

==========
Enables EXTERNAL_COMPONENT extensions in incognito by default.

Currently, the Media Router is in a broken state in incognito: it can talk to
the component via the Mojo API, but access to resources (like the Cast SDK,
feedbak, and setup) and tab capture is broken.  This enables the component in
incognito via the extensions system which resolves these issues.

BUG=606495

Review-Url: https://codereview.chromium.org/1991263003
Cr-Commit-Position: refs/heads/master@{#395758}
(cherry picked from commit 4193cc61735abc6d53edb85021222d5e866c2c6d)
==========

to

==========
Enables EXTERNAL_COMPONENT extensions in incognito by default.

Currently, the Media Router is in a broken state in incognito: it can talk to
the component via the Mojo API, but access to resources (like the Cast SDK,
feedbak, and setup) and tab capture is broken.  This enables the component in
incognito via the extensions system which resolves these issues.

BUG=606495

Review-Url: https://codereview.chromium.org/1991263003
Cr-Commit-Position: refs/heads/master@{#395758}
(cherry picked from commit 4193cc61735abc6d53edb85021222d5e866c2c6d)

Committed:
https://chromium.googlesource.com/chromium/src/+/4f9a72e8b1774a4eba32c2eb9adb...
==========

[mark a. foltz, 2016-05-26 22:40:19]

Committed patchset #1 (id:1) manually as
4f9a72e8b1774a4eba32c2eb9adb6fe10479c2bf.