kSwizzleNone      521 content/common/gpu/client/gl_helper.cc                 kSwizzleNone,
kSwizzleNone      578 content/common/gpu/client/gl_helper.cc                 kSwizzleNone,
kSwizzleNone     1211 content/common/gpu/client/gl_helper.cc   ReadbackSwizzle swizzle = kSwizzleNone;