Add getColorSpace to GrTextureProducer

src/gpu/GrTextureParamsAdjuster.h

Index: src/gpu/GrTextureParamsAdjuster.h
diff --git a/src/gpu/GrTextureParamsAdjuster.h b/src/gpu/GrTextureParamsAdjuster.h
index 08d71c4563f9c047ad39c51882810f9497c5d3be..7513eb4d2f03dc5bec123779fc8352cbfb79eda8 100644
--- a/src/gpu/GrTextureParamsAdjuster.h
+++ b/src/gpu/GrTextureParamsAdjuster.h
@@ -108,6 +108,8 @@ protected:
     */
     virtual void didCacheCopy(const GrUniqueKey& copyKey) = 0;
 
+    virtual SkColorSpace* getColorSpace() = 0;
+
 private:
     const int   fWidth;
     const int   fHeight;