Create swizzle table inside of glsl caps

src/gpu/GrCaps.cpp

Index: src/gpu/GrCaps.cpp
diff --git a/src/gpu/GrCaps.cpp b/src/gpu/GrCaps.cpp
index 75cecdfb8c0b8d00111b2f3ed37e0be9fae0dcbd..22f6a6de8ff6e6570814ebeb110e35a1d44fa856 100644
--- a/src/gpu/GrCaps.cpp
+++ b/src/gpu/GrCaps.cpp
@@ -77,6 +77,7 @@ SkString GrShaderCaps::dump() const {
 
 void GrShaderCaps::applyOptionsOverrides(const GrContextOptions& options) {
     fDualSourceBlendingSupport = fDualSourceBlendingSupport && !options.fSuppressDualSourceBlending;
+    this->onApplyOptionsOverrides(options);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -127,6 +128,7 @@ void GrCaps::applyOptionsOverrides(const GrContextOptions& options) {
     } else {
         fMaxTileSize = options.fMaxTileSizeOverride;
     }
+    this->onApplyOptionsOverrides(options);
 }
 
 static SkString map_flags_to_string(uint32_t flags) {