FileVersionInfoWin: BASE_EXPORT the class instead of select methods.

Some methods are being called from a different component, so should be
exported. Rather than selectively exporting them, we just made the
entire class (and its parent class, FileVersionInfo) BASE_EXPORTed.

Note: This is not currently breaking the build, because the methods are
called by virtual dispatch, but in principle, they should be exported.
Context: I am investigating adding the "final" keyword to a bunch of
classes (http://crbug.com/482800) and this breaks once "final" is added
to FileVersionInfoWin.

BUG=484939

Review URL: https://codereview.chromium.org/1122413002

Cr-Commit-Position: refs/heads/master@{#328683}

0 files changed, 0 insertions, 0 deletions