fix mac warnings
http://codereview.appspot.com/5431053/

M    include/views/SkOSWindow_Mac.h
M    src/utils/mac/SkNSView.mm
M    src/utils/mac/SkNSView.h
M    src/utils/mac/SkOSWindow_Mac.mm
M    src/utils/mac/SkSampleNSView.h



git-svn-id: http://skia.googlecode.com/svn/trunk@2740 2bbb7eff-a529-9590-31e7-b0007b416f81
5 files changed