Revert of sRGB support in Ganesh. Several pieces:

include/gpu/GrTextureParams.h

Index: include/gpu/GrTextureParams.h
diff --git a/include/gpu/GrTextureParams.h b/include/gpu/GrTextureParams.h
index 40d9ac5375049327d66f5513c9a3927de4aaeb8e..3186b1b027186b29df31361e7fd80eb6055d52f8 100644
--- a/include/gpu/GrTextureParams.h
+++ b/include/gpu/GrTextureParams.h
@@ -24,11 +24,6 @@
         static const GrTextureParams gParams(SkShader::kClamp_TileMode, kBilerp_FilterMode);
         return gParams;
     }
-    static const GrTextureParams& ClampNoFilterForceAllowSRGB() {
-        static const GrTextureParams gParams(SkShader::kClamp_TileMode, kNone_FilterMode,
-                                             kForceAllowSRGB_SRGBMode);
-        return gParams;
-    }
 
     GrTextureParams() {
         this->reset();
@@ -40,17 +35,8 @@
         kMipMap_FilterMode
     };
 
-    enum SRGBMode {
-        kRespectDestination_SRGBMode,
-        kForceAllowSRGB_SRGBMode,
-    };
-
     GrTextureParams(SkShader::TileMode tileXAndY, FilterMode filterMode) {
         this->reset(tileXAndY, filterMode);
-    }
-
-    GrTextureParams(SkShader::TileMode tileXandY, FilterMode filterMode, SRGBMode srgbMode) {
-        this->reset(tileXandY, filterMode, srgbMode);
     }
 
     GrTextureParams(const SkShader::TileMode tileModes[2], FilterMode filterMode) {
@@ -65,7 +51,6 @@
         fTileModes[0] = params.fTileModes[0];
         fTileModes[1] = params.fTileModes[1];
         fFilterMode = params.fFilterMode;
-        fSRGBMode = params.fSRGBMode;
         return *this;
     }
 
@@ -76,20 +61,12 @@
     void reset(SkShader::TileMode tileXAndY, FilterMode filterMode) {
         fTileModes[0] = fTileModes[1] = tileXAndY;
         fFilterMode = filterMode;
-        fSRGBMode = kRespectDestination_SRGBMode;
-    }
-
-    void reset(SkShader::TileMode tileXandY, FilterMode filterMode, SRGBMode srgbMode) {
-        fTileModes[0] = fTileModes[1] = tileXandY;
-        fFilterMode = filterMode;
-        fSRGBMode = srgbMode;
     }
 
     void reset(const SkShader::TileMode tileModes[2], FilterMode filterMode) {
         fTileModes[0] = tileModes[0];
         fTileModes[1] = tileModes[1];
         fFilterMode = filterMode;
-        fSRGBMode = kRespectDestination_SRGBMode;
     }
 
     void setClampNoFilter() {
@@ -107,8 +84,6 @@
     void setTileModeY(const SkShader::TileMode tm) { fTileModes[1] = tm; }
     void setTileModeXAndY(const SkShader::TileMode tm) { fTileModes[0] = fTileModes[1] = tm; }
 
-    void setSRGBMode(SRGBMode srgbMode) { fSRGBMode = srgbMode; }
-
     SkShader::TileMode getTileModeX() const { return fTileModes[0]; }
 
     SkShader::TileMode getTileModeY() const { return fTileModes[1]; }
@@ -120,13 +95,10 @@
 
     FilterMode filterMode() const { return fFilterMode; }
 
-    SRGBMode srgbMode() const { return fSRGBMode; }
-
     bool operator== (const GrTextureParams& other) const {
         return fTileModes[0] == other.fTileModes[0] &&
                fTileModes[1] == other.fTileModes[1] &&
-               fFilterMode == other.fFilterMode &&
-               fSRGBMode == other.fSRGBMode;
+               fFilterMode == other.fFilterMode;
     }
 
     bool operator!= (const GrTextureParams& other) const { return !(*this == other); }
@@ -134,6 +106,5 @@
 private:
     SkShader::TileMode fTileModes[2];
     FilterMode         fFilterMode;
-    SRGBMode           fSRGBMode;
 };
 #endif