
Remove extraneous const qualifier.

Found by clang:
[293/898] CXX obj/src/gpu/gl/gr.GrGpuGL.o
../../src/gpu/gl/GrGpuGL.cpp:2031:1: warning: 'const' type qualifier on return
type has no effect [-Wignored-qualifiers]
const GrGLenum tile_to_gl_wrap(SkShader::TileMode tm) {
        ^~~~~

Signed-off-by: Thiago Farina <tfarina@chromium.org>

Review URL: https://codereview.appspot.com/6492093/



csulmone/skia,csulmone/skia,csulmone/skia,csulmone/skia