Fix includes files missing in release builds from GrCustomStageUnitTest.h.

Also fix SK_SUPPORT_GPU=0 build breaks in gmmain.cpp and GLProgramsTest.cpp




git-svn-id: http://skia.googlecode.com/svn/trunk@4947 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed