Revert "Revert "Mark wrapped textures imported into SkImages as "read only".""

This reverts commit ff4ccaa9fcfbcf29c476eda973febf4b2d6dc974.

Bug: skia:8509
Change-Id: If4a059d6e6e412ec1d6be2c70663d59c362e91d2
Reviewed-on: https://skia-review.googlesource.com/c/175249
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrProxyProvider.cpp b/src/gpu/GrProxyProvider.cpp
index 3259f28..dcf642b 100644
--- a/src/gpu/GrProxyProvider.cpp
+++ b/src/gpu/GrProxyProvider.cpp
@@ -415,8 +415,10 @@
 sk_sp<GrTextureProxy> GrProxyProvider::wrapBackendTexture(const GrBackendTexture& backendTex,
                                                           GrSurfaceOrigin origin,
                                                           GrWrapOwnership ownership,
+                                                          GrIOType ioType,
                                                           ReleaseProc releaseProc,
                                                           ReleaseContext releaseCtx) {
+    SkASSERT(ioType != kWrite_GrIOType);
     if (this->isAbandoned()) {
         return nullptr;
     }
@@ -426,7 +428,7 @@
         return nullptr;
     }
 
-    sk_sp<GrTexture> tex = fResourceProvider->wrapBackendTexture(backendTex, ownership);
+    sk_sp<GrTexture> tex = fResourceProvider->wrapBackendTexture(backendTex, ownership, ioType);
     if (!tex) {
         return nullptr;
     }