Deprecate KV storage (#8477)
Deprecate KV storage (#8477)

* deprecated

* deprecated

google/WebFundamentals,myakura/WebFundamentals,myakura/WebFundamentals,myakura/WebFundamentals,myakura/WebFundamentals,google/WebFundamentals,google/WebFundamentals,google/WebFundamentals