Revert of Create swizzle table inside of glsl caps

src/gpu/glsl/GrGLSLCaps.h

Index: src/gpu/glsl/GrGLSLCaps.h
diff --git a/src/gpu/glsl/GrGLSLCaps.h b/src/gpu/glsl/GrGLSLCaps.h
index e703fb852384c7b4193b6fb66d6e5fa7ad9e2c8a..f93ef2766d18f376a0e65c1399ebf6151fbb4502 100755
--- a/src/gpu/glsl/GrGLSLCaps.h
+++ b/src/gpu/glsl/GrGLSLCaps.h
@@ -82,15 +82,6 @@
         return fShaderDerivativeExtensionString;
     }
 
-    bool mustSwizzleInShader() const { return fMustSwizzleInShader; }
-
-    /**
-     * Returns a string which represents how to map from an internal GLFormat to a given
-     * GrPixelConfig. The function mustSwizzleInShader determines whether this swizzle is applied
-     * in the generated shader code or using sample state in the 3D API.
-     */
-    const char* getSwizzleMap(GrPixelConfig config) const { return fConfigSwizzle[config]; }
-
     GrGLSLGeneration generation() const { return fGLSLGeneration; }
 
     /**
@@ -99,8 +90,6 @@
     SkString dump() const override;
 
 private:
-    void onApplyOptionsOverrides(const GrContextOptions& options) override;
-
     GrGLSLGeneration fGLSLGeneration;
     
     bool fDropsTileOnZeroDivide : 1;
@@ -120,9 +109,6 @@
 
     AdvBlendEqInteraction fAdvBlendEqInteraction;
 
-    bool        fMustSwizzleInShader;
-    const char* fConfigSwizzle[kGrPixelConfigCnt];
-
     friend class GrGLCaps;  // For initialization.
 
     typedef GrShaderCaps INHERITED;