Revert of Implement argument validation for chrome.cast.channel.{open,send} (https://codereview.chromium.org/
255443002/)
Reason for revert:
Causing leaks: http://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%282%29/builds/2069
Original issue's description:
> Implement argument validation for chrome.cast.channel.{open,send}
>
> TESTED=Unit test. Manually with Cast extension
> BUG=331165
>
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266804
TBR=munjal@chromium.org,imcheng@chromium.org,mfoltz@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=331165
Review URL: https://codereview.chromium.org/
256333002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266833 0039d316-1c4b-4281-b951-d872f2087c98