Turned on SkSL->GLSL compiler
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288033003

Committed: https://skia.googlesource.com/skia/+/9b0fe3d125f237d9884732a48414fa85fc71b4e3
Committed: https://skia.googlesource.com/skia/+/b12b3c6908c62c908b3680be01e3b5bfd30de310
Committed: https://skia.googlesource.com/skia/+/f008b0a59f45c0d4bea3e66faf3b01805009ec89
Committed: https://skia.googlesource.com/skia/+/08b2ccf398e2b81bc05d2c105837e5419899469b
Committed: https://skia.googlesource.com/skia/+/dcfe6dba4a335e50e86ff68e3252065d4197432c
Committed: https://skia.googlesource.com/skia/+/ccb1dd8f267f9d7fe7c9d0ce222ebc81b41853b3
Review-Url: https://codereview.chromium.org/2288033003
diff --git a/src/sksl/sksl.include b/src/sksl/sksl.include
index 4fd5511..6dc1ff8 100644
--- a/src/sksl/sksl.include
+++ b/src/sksl/sksl.include
@@ -244,6 +244,8 @@
 $gvec4 texture($gsampler1D sampler, float P);
 $gvec4 texture($gsampler1D sampler, float P, float bias);
 $gvec4 texture($gsampler2D sampler, vec2 P);
+vec4 texture(samplerExternalOES sampler, vec2 P, float bias);
+vec4 texture(samplerExternalOES sampler, vec2 P);
 $gvec4 texture($gsampler2D sampler, vec2 P, float bias);
 $gvec4 texture($gsampler3D sampler, vec3 P);
 $gvec4 texture($gsampler3D sampler, vec3 P, float bias);
@@ -464,6 +466,7 @@
 vec4 texture1DProjLod(sampler1D sampler, vec2 coord, float lod);
 vec4 texture1DProjLod(sampler1D sampler, vec4 coord, float lod);
 vec4 texture2D(sampler2D sampler, vec2 coord);
+vec4 texture2D(samplerExternalOES sampler, vec2 coord);
 vec4 texture2D(sampler2D sampler, vec2 coord, float bias);
 vec4 texture2DProj(sampler2D sampler, vec3 coord);
 vec4 texture2DProj(sampler2D sampler, vec3 coord, float bias);