sRGB support in Ganesh. Several pieces:

include/gpu/SkGr.h

Index: include/gpu/SkGr.h
diff --git a/include/gpu/SkGr.h b/include/gpu/SkGr.h
index aacc5d25db20f40815d5ed6278058306e12c318b..6a73636c69047e26e70dbcd39127f378bd88c658 100644
--- a/include/gpu/SkGr.h
+++ b/include/gpu/SkGr.h
@@ -15,6 +15,7 @@
 #include "SkFilterQuality.h"
 #include "SkImageInfo.h"
 
+class GrCaps;
 class GrContext;
 class GrTexture;
 class GrTextureParams;
@@ -70,10 +71,10 @@ static inline GrColor SkPMColorToGrColor(SkPMColor c) {
 GrTexture* GrRefCachedBitmapTexture(GrContext*, const SkBitmap&, const GrTextureParams&);
 
 // TODO: Move SkImageInfo2GrPixelConfig to SkGrPriv.h (requires cleanup to SkWindow its subclasses).
-GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType, SkAlphaType, SkColorProfileType);
+GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType, SkAlphaType, SkColorProfileType, const GrCaps&);
 
-static inline GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info) {
-    return SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType(), info.profileType());
+static inline GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info, const GrCaps& caps) {
+    return SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType(), info.profileType(), caps);
 }
 
 GrTextureParams::FilterMode GrSkFilterQualityToGrFilterMode(SkFilterQuality paintFilterQuality,