Require sRGB write control for sRGB support. Add flag to GrPaint to suppress linear -> sRGB convers…

src/gpu/gl/GrGLCaps.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLCaps_DEFINED
 #define GrGLCaps_DEFINED
@@ skipping 305 matching lines @@
     bool bindFragDataLocationSupport() const { return fBindFragDataLocationSupport; }
 
     bool bindUniformLocationSupport() const { return fBindUniformLocationSupport; }
 
     /// Are textures with GL_TEXTURE_RECTANGLE type supported.
     bool rectangleTextureSupport() const { return fRectangleTextureSupport; }
 
     /// GL_ARB_texture_swizzle
     bool textureSwizzleSupport() const { return fTextureSwizzleSupport; }
 
-    /**
-     * Is there support for enabling/disabling sRGB writes for sRGB-capable color attachments?
-     * If false this does not mean sRGB is not supported but rather that if it is supported
-     * it cannot be turned off for configs that support it.
-     */
-    bool srgbWriteControl() const { return fSRGBWriteControl; }
-
     bool mipMapLevelAndLodControlSupport() const { return fMipMapLevelAndLodControlSupport; }
 
     /**
      * Returns a string containing the caps info.
      */
     SkString dump() const override;
 
     bool rgba8888PixelsOpsAreSlow() const { return fRGBA8888PixelsOpsAreSlow; }
     bool partialFBOReadIsSlow() const { return fPartialFBOReadIsSlow; }
     bool rgbaToBgraReadbackConversionsAreSlow() const {
@@ skipping 52 matching lines @@
     bool fDirectStateAccessSupport : 1;
     bool fDebugSupport : 1;
     bool fES2CompatibilitySupport : 1;
     bool fMultisampleDisableSupport : 1;
     bool fDrawIndirectSupport : 1;
     bool fMultiDrawIndirectSupport : 1;
     bool fBaseInstanceSupport : 1;
     bool fUseNonVBOVertexAndIndexDynamicData : 1;
     bool fIsCoreProfile : 1;
     bool fBindFragDataLocationSupport : 1;
-    bool fSRGBWriteControl : 1;
     bool fRGBA8888PixelsOpsAreSlow : 1;
     bool fPartialFBOReadIsSlow : 1;
     bool fBindUniformLocationSupport : 1;
     bool fRectangleTextureSupport : 1;
     bool fTextureSwizzleSupport : 1;
     bool fMipMapLevelAndLodControlSupport : 1;
     bool fRGBAToBGRAReadbackConversionsAreSlow : 1;
 
     BlitFramebufferSupport fBlitFramebufferSupport;
 
@@ skipping 65 matching lines @@
 
         GrSwizzle fSwizzle;
     };
 
     ConfigInfo fConfigTable[kGrPixelConfigCnt];
 
     typedef GrCaps INHERITED;
 };
 
 #endif