There's no reason to support any other encoding in these files.
This only affects the files themselves and not streams they open.
Bug: https://crbug.com/gerrit/10418
Change-Id: I053cb40cd3666ce5c8a0689b9dd938f24ca765bf
Fix the following issues reported by pylint:
C0321: More than one statement on a single line
W0622: Redefining built-in 'name'
W0612: Unused variable 'name'
W0613: Unused argument 'name'
W0102: Dangerous default value 'value' as argument
W0105: String statement has no effect
Also fixed a few cases of inconsistent indentation.
Change-Id: Ie0db839e7c57d576cff12d8c055fe87030d00744