Remove unnecessary SkFILEStream::getMemoryBase

It overrides the SkStream:: version, but does the same thing.

Change-Id: I857f2119a85bb3f942707ab3cef58b45a2cf4b7a
Reviewed-on: https://skia-review.googlesource.com/14828
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2 files changed