OptState owns program descriptor

BUG=skia:

Review URL: https://codereview.chromium.org/674543004
diff --git a/gyp/gpu.gypi b/gyp/gpu.gypi
index 033d51c..9db1d7f 100644
--- a/gyp/gpu.gypi
+++ b/gyp/gpu.gypi
@@ -114,6 +114,7 @@
       '<(skia_src_path)/gpu/GrPathRendering.h',
       '<(skia_src_path)/gpu/GrPathUtils.cpp',
       '<(skia_src_path)/gpu/GrPathUtils.h',
+      '<(skia_src_path)/gpu/GrProgramDesc.h',
       '<(skia_src_path)/gpu/GrProgramElement.cpp',
       '<(skia_src_path)/gpu/GrProcessor.cpp',
       '<(skia_src_path)/gpu/GrGpuResourceRef.cpp',