Cache render targets that render to wrapped textures

src/gpu/GrResourceProvider.cpp

Index: src/gpu/GrResourceProvider.cpp
diff --git a/src/gpu/GrResourceProvider.cpp b/src/gpu/GrResourceProvider.cpp
index 238276d799473af52b8e016d2e4f093473f4575c..4cd217df32548ded1121a8f78a988504d0bb8d8a 100644
--- a/src/gpu/GrResourceProvider.cpp
+++ b/src/gpu/GrResourceProvider.cpp
@@ -190,5 +190,14 @@ GrRenderTarget* GrResourceProvider::wrapBackendTextureAsRenderTarget(
     if (this->isAbandoned()) {
         return nullptr;
     }
+
+    GrUniqueKey key;
+    this->gpu()->computeBackendTextureKeyForWrapAsRenderTarget(desc, &key);
+    if (key.isValid()) {
+        sk_sp<GrRenderTarget> rt(this->findAndRefRenderTargetByUniqueKey(key));
+        if (rt && this->gpu()->rewrapRenderTargetWithBackendTexture(desc, rt.get())) {
+            return rt.release();
+        }
+    }
     return this->gpu()->wrapBackendTextureAsRenderTarget(desc);
 }