[Android,MediaFling] Fix the encoding issue with already encoded URLs for abc13.com/live

[Android,MediaFling] Fix the encoding issue with already encoded URLs for abc13.com/live

Also some cleanup of error handling, url type conversions and media type detection,
extend the UMA to cover more failure cases.

BUG=605544
TEST=unit tests + avayvod.github.io/mediaflingtest.html

Review URL: https://codereview.chromium.org/1907413002

Cr-Commit-Position: refs/heads/master@{#389735}
(cherry picked from commit e358d10bb42b0699c2db6276b57d6b9963be4b24)

Committed: https://chromium.googlesource.com/chromium/src/+/a8de7f8d6820d42bf0a476fd3029dd0cf0ae9c36

[whywhat, 2016-05-03 10:09:44]

Description was changed from

==========
[Android,MediaFling] Fix the encoding issue with already encoded URLs for
abc13.com/live

Also some cleanup of error handling, url type conversions and media type
detection,
extend the UMA to cover more failure cases.

BUG=605544
TEST=unit tests + avayvod.github.io/mediaflingtest.html

Review URL: https://codereview.chromium.org/1907413002

Cr-Commit-Position: refs/heads/master@{#389735}
(cherry picked from commit e358d10bb42b0699c2db6276b57d6b9963be4b24)
==========

to

==========
[Android,MediaFling] Fix the encoding issue with already encoded URLs for
abc13.com/live

Also some cleanup of error handling, url type conversions and media type
detection,
extend the UMA to cover more failure cases.

BUG=605544
TEST=unit tests + avayvod.github.io/mediaflingtest.html

Review URL: https://codereview.chromium.org/1907413002

Cr-Commit-Position: refs/heads/master@{#389735}
(cherry picked from commit e358d10bb42b0699c2db6276b57d6b9963be4b24)

Committed:
https://chromium.googlesource.com/chromium/src/+/a8de7f8d6820d42bf0a476fd3029...
==========

[whywhat, 2016-05-03 10:09:45]

Committed patchset #1 (id:1) manually as
a8de7f8d6820d42bf0a476fd3029dd0cf0ae9c36.