Automated g4 rollback of changelist 167876988.
Automated g4 rollback of changelist 167876988.

*** Reason for rollback ***

Breakages

*** Original change description ***

Define a WebrequestEventInterface interface to be used by chrome.webRequest and new externs to be defined for the <webview> tag elsewhere.

***

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=167914476

nawawi/closure-compiler,nawawi/closure-compiler,tiobe/closure-compiler,tiobe/closure-compiler,monetate/closure-compiler,tdelmas/closure-compiler,MatrixFrog/closure-compiler,monetate/closure-compiler,vobruba-martin/closure-compiler,monetate/closure-compiler,mprobst/closure-compiler,tdelmas/closure-compiler,tdelmas/closure-compiler,MatrixFrog/closure-compiler,shantanusharma/closure-compiler,Yannic/closure-compiler,Yannic/closure-compiler,google/closure-compiler,ChadKillingsworth/closure-compiler,monetate/closure-compiler,shantanusharma/closure-compiler,mprobst/closure-compiler,vobruba-martin/closure-compiler,tdelmas/closure-compiler,vobruba-martin/closure-compiler,ChadKillingsworth/closure-compiler,MatrixFrog/closure-compiler,nawawi/closure-compiler,shantanusharma/closure-compiler,ChadKillingsworth/closure-compiler,ChadKillingsworth/closure-compiler,mprobst/closure-compiler,tiobe/closure-compiler,mprobst/closure-compiler,google/closure-compiler,Yannic/closure-compiler,shantanusharma/closure-compiler,google/closure-compiler,vobruba-martin/closure-compiler,nawawi/closure-compiler,Yannic/closure-compiler,MatrixFrog/closure-compiler,tiobe/closure-compiler,google/closure-compiler