Plumbing mipmaps to the point of creation.

include/core/SkImage.h

Index: include/core/SkImage.h
diff --git a/include/core/SkImage.h b/include/core/SkImage.h
index c9579b610c3edaf9a1df520e15e3cd4a66874988..3a8777abe628d11597e451e3e88105e78442b269 100644
--- a/include/core/SkImage.h
+++ b/include/core/SkImage.h
@@ -143,6 +143,10 @@ public:
 
     static sk_sp<SkImage> MakeTextureFromPixmap(GrContext*, const SkPixmap&, SkBudgeted budgeted);
 
+    static sk_sp<SkImage> MakeTextureFromMipMap(GrContext*, const SkImageInfo&,
+                                                const GrMipLevel* texels, int mipLevelCount,
+                                                SkBudgeted);
+
     ///////////////////////////////////////////////////////////////////////////////////////////////
 
     int width() const { return fWidth; }