Add base::ScopedFILE for management of <stdio.h> FILE* handles.
Add base::ScopedFILE for management of <stdio.h> FILE* handles.

bowlofstew/mini_chromium,mark-chromium/mini_chromium,chromium/mini_chromium,chromium/mini_chromium,bowlofstew/mini_chromium,chromium/mini_chromium,Chilledheart/mini_chromium,bowlofstew/mini_chromium,mark-chromium/mini_chromium,Chilledheart/mini_chromium,Chilledheart/mini_chromium,mark-chromium/mini_chromium