This error is one of many showing up when you set
`compilation_mode="SIMPLE"`, so fixing it is a prerequisite for
turning on compilation:
ERROR - Behaviors must be global names or qualified names that are declared as object literals or array literals of other valid Behaviors.
Gerrit.KeyboardShortcutBehavior,
^
ProTip: "JSC_POLYMER_UNQUALIFIED_BEHAVIOR" can be added to the `suppress` attribute of:
//polygerrit-ui/app:polygerrit_ui_closure_lib
Also adding a new entry point for gr-diff because we need to add the
`let Gerrit = ...` line somewhere at the root that is not imported
elsewhere.
Change-Id: I47a487e31d38855978e6a449aab5978edc050d6d
e70e678d90