Fix styling of enum/boolean dropdowns in embedded Explorer
Fix styling of enum/boolean dropdowns in embedded Explorer

R=moshenko
DELTA=18  (18 added, 0 deleted, 0 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=2882

Durgapaavank/google-apis-explorer,bcblashko/google-apis-explorer,leonousco/google-apis-explorer,guido-bruzadin/google-apis-explorer,erpragatisingh/google-apis-explorer,leonousco/google-apis-explorer,mr1azl/google-apis-explorer,clementdenis/google-apis-explorer,rgroult/google-apis-explorer,lethanhtuanhcm1982/google-apis-explorer,MrLoick/google-apis-explorer,Durgapaavank/google-apis-explorer,BORHANUDDIN1/google-apis-explorer,lethanhtuanhcm1982/google-apis-explorer,MrLoick/google-apis-explorer,bcblashko/google-apis-explorer,guido-bruzadin/google-apis-explorer,mr1azl/google-apis-explorer,clementdenis/google-apis-explorer,erpragatisingh/google-apis-explorer,BORHANUDDIN1/google-apis-explorer,rgroult/google-apis-explorer