Gamma-correctness pushed into Skia, top-down.

include/core/SkImageInfo.h

Index: include/core/SkImageInfo.h
diff --git a/include/core/SkImageInfo.h b/include/core/SkImageInfo.h
index b2dda3f02178f2f2e241c92a06b683ddf4a9d15e..c55edd36c2252bc38fa2ad581875e839aa8a0ef5 100644
--- a/include/core/SkImageInfo.h
+++ b/include/core/SkImageInfo.h
@@ -318,4 +318,14 @@ private:
     {}
 };
 
+///////////////////////////////////////////////////////////////////////////////
+
+static inline bool SkColorAndProfileAreGammaCorrect(SkColorType ct, SkColorProfileType pt) {
+    return kSRGB_SkColorProfileType == pt || kRGBA_F16_SkColorType == ct;
+}
+
+static inline bool SkImageInfoIsGammaCorrect(const SkImageInfo& info) {
+    return SkColorAndProfileAreGammaCorrect(info.colorType(), info.profileType());
+}
+
 #endif