remove file dependency from dwds (#1085)

move file dependency from dwds to frontend_server_{client|common}

Author: Jonah Williams

dwds/pubspec.yaml

@@ -17,7 +17,6 @@ dependencies:
   # devtools_server indirectly depends on devtools so keep this around.
   devtools: ^0.8.0
   devtools_server: ^0.8.0
-  file: ^5.1.0
   http: ^0.12.0
   http_multi_server: ^2.0.0
   logging: ^0.11.3

frontend_server_client/pubspec.yaml

@@ -10,6 +10,7 @@ dependencies:
   meta: ^1.1.0
   path: ^1.7.0
   uuid: ^2.0.0
+  file: ^5.1.0
 dev_dependencies:
   package_config: ^1.9.2
   shelf: ^0.7.5

frontend_server_common/pubspec.yaml

@@ -6,6 +6,7 @@ environment:
   sdk: ">=2.7.0 <3.0.0"
 
 dependencies:
+  file: ^5.1.0
   dwds:
     path: ../dwds