sRGB support in Ganesh. Several pieces:

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 102 matching lines @@
     };
 
     /**
      * Initializes the GrGLCaps to the set of features supported in the current
      * OpenGL context accessible via ctxInfo.
      */
     GrGLCaps(const GrContextOptions& contextOptions, const GrGLContextInfo& ctxInfo,
              const GrGLInterface* glInterface);
 
     bool isConfigTexturable(GrPixelConfig config) const override {
-        SkASSERT(kGrPixelConfigCnt > config);
+        SkASSERT(kGrPixelConfigCnt > static_cast<int>(config));
         return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kTextureable_Flag);
     }
 
     bool isConfigRenderable(GrPixelConfig config, bool withMSAA) const override {
-        SkASSERT(kGrPixelConfigCnt > config);
+        SkASSERT(kGrPixelConfigCnt > static_cast<int>(config));
         if (withMSAA) {
             return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kRenderableWithMSAA_Flag);
         } else {
             return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kRenderable_Flag);
         }
     }
 
     bool isConfigTexSupportEnabled(GrPixelConfig config) const {
-        SkASSERT(kGrPixelConfigCnt > config);
+        SkASSERT(kGrPixelConfigCnt > static_cast<int>(config));
         return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kCanUseTexStorage_Flag);
     }
 
     /** Returns the mapping between GrPixelConfig components and GL internal format components. */
     const GrSwizzle& configSwizzle(GrPixelConfig config) const {
         return fConfigTable[config].fSwizzle;
     }
 
     bool getTexImageFormats(GrPixelConfig surfaceConfig, GrPixelConfig externalConfig,
                             GrGLenum* internalFormat, GrGLenum* externalFormat,
@@ skipping 340 matching lines @@
 
         GrSwizzle fSwizzle;
     };
 
     ConfigInfo fConfigTable[kGrPixelConfigCnt];
 
     typedef GrCaps INHERITED;
 };
 
 #endif