Plumbing mipmaps to the point of creation.

src/gpu/SkGrPriv.h

Index: src/gpu/SkGrPriv.h
diff --git a/src/gpu/SkGrPriv.h b/src/gpu/SkGrPriv.h
index 46be3a53cfb0b322ab5832ac3867c338dc9fd46d..ac21669bd87ba7fbae077d158f895f8af2445353 100644
--- a/src/gpu/SkGrPriv.h
+++ b/src/gpu/SkGrPriv.h
@@ -131,6 +131,12 @@ GrTexture* GrGenerateMipMapsAndUploadToTexture(GrContext*, const SkBitmap&);
  */
 GrTexture* GrUploadPixmapToTexture(GrContext*, const SkPixmap&, SkBudgeted budgeted);
 
+/**
+ * Creates a new texture populated with the mipmap levels.
+ */
+GrTexture* GrUploadMipMapToTexture(GrContext*, const SkImageInfo&, const GrMipLevel* texels,
+                                   int mipLevelCount);
+
 //////////////////////////////////////////////////////////////////////////////
 
 GR_STATIC_ASSERT((int)kZero_GrBlendCoeff == (int)SkXfermode::kZero_Coeff);