add callbacks to Images that wrap client-provided content

src/image/SkImage.cpp

Index: src/image/SkImage.cpp
diff --git a/src/image/SkImage.cpp b/src/image/SkImage.cpp
index 520255776f86f96bb6d1cc42dd71035d8b0586aa..66756cb512d99beb8dbf6708536194c588e939e2 100644
--- a/src/image/SkImage.cpp
+++ b/src/image/SkImage.cpp
@@ -205,7 +205,8 @@ SkImage* SkImage_Base::onNewImage(int newWidth, int newHeight, const SkIRect* su
 
 #if !SK_SUPPORT_GPU
 
-SkImage* SkImage::NewFromTexture(GrContext*, const GrBackendTextureDesc&, SkAlphaType) {
+SkImage* SkImage::NewFromTexture(GrContext*, const GrBackendTextureDesc&, SkAlphaType,
+                                 TextureReleaseProc, ReleaseContext) {
     return NULL;
 }