[Request] support barrons.com

[2011]

Please follow the guide below

• You will be asked some questions and requested to provide some information, please read them carefully and answer honestly
• Put an x into all the boxes [ ] relevant to your issue (like that [x])
• Use Preview tab to see how your issue will actually look like

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.06.18. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.06.18

Before submitting an issue make sure you have:

• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add -v flag to your command line you run youtube-dl with, copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

$ youtube-dl 'http://www.barrons.com/video/capitalism-deserves-more-respect-from-millennials/F301217E-6F46-43AE-B8D2-B7180D642EE9.html'
[generic] F301217E-6F46-43AE-B8D2-B7180D642EE9: Requesting header
WARNING: Falling back on generic information extractor.
[generic] F301217E-6F46-43AE-B8D2-B7180D642EE9: Downloading webpage
[generic] F301217E-6F46-43AE-B8D2-B7180D642EE9: Extracting information
[generic] iframe: Requesting header
WARNING: Falling back on generic information extractor.
[generic] iframe: Downloading webpage
[generic] iframe: Extracting information
ERROR: Unsupported URL: https://video-api-secure.wsj.com/api-video/player/iframe.html?guid=F301217E-6F46-43AE-B8D2-B7180D642EE9&playerid=twittercard
...
<end of log>

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This is actually a very easy one. :) Barron's has the same infrastructure as the Wall Street Journal (they are owned by the same company), and simply needs to use the WSJ extractor rather than falling back to the generic one.