Begin implementation of SkImage_Base::makeColorSpace

BUG=skia:

Change-Id: Idf946faa64dad32a28070a430926a8225dbf6e5a
Reviewed-on: https://skia-review.googlesource.com/9622
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/src/image/SkImage_Base.h b/src/image/SkImage_Base.h
index e08d7610f7..284af0d1a6 100644
--- a/src/image/SkImage_Base.h
+++ b/src/image/SkImage_Base.h
@@ -81,14 +81,18 @@ public:
         fAddedToCache.store(true);
     }
 
-    virtual sk_sp<SkImage> onMakeColorSpace(sk_sp<SkColorSpace>) {
-        // TODO: Implement this.
-        return sk_ref_sp(this);
-    }
+    // Transforms image into the input color space.
+    sk_sp<SkImage> makeColorSpace(sk_sp<SkColorSpace> target) const;
 
     virtual bool onPinAsTexture(GrContext*) const { return false; }
     virtual void onUnpinAsTexture(GrContext*) const {}
 
+protected:
+    virtual sk_sp<SkImage> onMakeColorSpace(sk_sp<SkColorSpace>) const {
+        // TODO: Make this pure virtual.
+        return sk_ref_sp(const_cast<SkImage_Base*>(this));
+    }
+
 private:
     // Set true by caches when they cache content that's derived from the current pixels.
     mutable SkAtomic<bool> fAddedToCache;