Allow GrGpuResources' unique keys to be changed.

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index ef80b5b290218e4b50d90bf53eb52f9ba36848b3..a4679a923c75bac501b92302947c69c1123fede8 100755
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -1582,12 +1582,12 @@ void GrContext::setResourceCacheLimits(int maxTextures, size_t maxTextureBytes)
     fResourceCache->setLimits(maxTextures, maxTextureBytes);
 }
 
-bool GrContext::addResourceToCache(const GrUniqueKey& key, GrGpuResource* resource) {
+void GrContext::addResourceToCache(const GrUniqueKey& key, GrGpuResource* resource) {
     ASSERT_OWNED_RESOURCE(resource);
-    if (!resource || resource->wasDestroyed()) {
-        return false;
+    if (!resource) {
+        return;
     }
-    return resource->resourcePriv().setUniqueKey(key);
+    resource->resourcePriv().setUniqueKey(key);
 }
 
 bool GrContext::isResourceInCache(const GrUniqueKey& key) const {