plugins/flutter_webview_plugin

Rafal Wachol afb60fae88 Added api to check if can navigate back and forward (#600)		%!s(int64=6) %!d(string=hai) anos
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flutter_webview_plugin_test.dart	afb60fae88 Added api to check if can navigate back and forward (#600)	%!s(int64=6) %!d(string=hai) anos