Make GrBackendTexture take Gr*Info refs in ctor, and copy them.

Bug: skia:
Change-Id: Ic05d3384fa07560fc18c52bb8ae03541a72515f7
Reviewed-on: https://skia-review.googlesource.com/14374
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/tools/viewer/sk_app/VulkanWindowContext.cpp b/tools/viewer/sk_app/VulkanWindowContext.cpp
index f483c27..809c614 100644
--- a/tools/viewer/sk_app/VulkanWindowContext.cpp
+++ b/tools/viewer/sk_app/VulkanWindowContext.cpp
@@ -274,7 +274,7 @@
         info.fFormat = format;
         info.fLevelCount = 1;
 
-        GrBackendTexture backendTex(fWidth, fHeight, &info);
+        GrBackendTexture backendTex(fWidth, fHeight, info);
 
         fSurfaces[i] = SkSurface::MakeFromBackendTextureAsRenderTarget(fContext, backendTex,
                                                                        kTopLeft_GrSurfaceOrigin,