TRAC #12156
The fragment shader has no default precision qualifier for floating-point types,
so compilation should fail when it's not set explicitly globally or per declaration.
Signed-off-by: Shannon Woods
Signed-off-by: Daniel Koch

Author:    Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@293 736b8ea6-26fd-11df-bfd4-992fa37f6226