Add externs for chrome.debugger and chrome.tabs.TAB_ID_NONE.
Add externs for chrome.debugger and chrome.tabs.TAB_ID_NONE.

I'm a little unsure what to do with Debuggee. I think it should have been named chrome.debugger.Debuggee, but it looks like it's already being used with the current name, so I don't want to change it.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=144124651

mprobst/closure-compiler,anomaly/closure-compiler,brad4d/closure-compiler,nawawi/closure-compiler,GerHobbelt/closure-compiler,Yannic/closure-compiler,shantanusharma/closure-compiler,MatrixFrog/closure-compiler,mprobst/closure-compiler,shantanusharma/closure-compiler,GerHobbelt/closure-compiler,tiobe/closure-compiler,shantanusharma/closure-compiler,Pimm/closure-compiler,anomaly/closure-compiler,google/closure-compiler,MatrixFrog/closure-compiler,Pimm/closure-compiler,monetate/closure-compiler,Pimm/closure-compiler,tdelmas/closure-compiler,GerHobbelt/closure-compiler,ChadKillingsworth/closure-compiler,MatrixFrog/closure-compiler,nawawi/closure-compiler,brad4d/closure-compiler,monetate/closure-compiler,vobruba-martin/closure-compiler,MatrixFrog/closure-compiler,Yannic/closure-compiler,nawawi/closure-compiler,tiobe/closure-compiler,Dominator008/closure-compiler,google/closure-compiler,tiobe/closure-compiler,tdelmas/closure-compiler,vobruba-martin/closure-compiler,ChadKillingsworth/closure-compiler,anomaly/closure-compiler,google/closure-compiler,Dominator008/closure-compiler,vobruba-martin/closure-compiler,nawawi/closure-compiler,tdelmas/closure-compiler,ChadKillingsworth/closure-compiler,anomaly/closure-compiler,shantanusharma/closure-compiler,Yannic/closure-compiler,vobruba-martin/closure-compiler,tdelmas/closure-compiler,google/closure-compiler,brad4d/closure-compiler,monetate/closure-compiler,tiobe/closure-compiler,mprobst/closure-compiler,Yannic/closure-compiler,mprobst/closure-compiler,GerHobbelt/closure-compiler,ChadKillingsworth/closure-compiler,monetate/closure-compiler,Dominator008/closure-compiler