Delete the FontPlatformData(const FontDescription&) constructor as it is not implemented and never used.
Delete the FontPlatformData(const FontDescription&) constructor as it is
not implemented and never used.

R=derat@chromium.org

Review URL: https://codereview.chromium.org/469873002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@180210 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs