Reduce dependence on GrSurface's origin field (take 3)

TBR=bsalomon@google.com

Change-Id: I8c95c6774897dbd87e3c5c87d92f75c5b64d4e76
Reviewed-on: https://skia-review.googlesource.com/26424
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/effects/GrTextureStripAtlas.cpp b/src/gpu/effects/GrTextureStripAtlas.cpp
index dcc5362..65e3c97 100644
--- a/src/gpu/effects/GrTextureStripAtlas.cpp
+++ b/src/gpu/effects/GrTextureStripAtlas.cpp
@@ -207,7 +207,8 @@
     builder[0] = static_cast<uint32_t>(fCacheKey);
     builder.finish();
 
-    sk_sp<GrTextureProxy> proxy = fDesc.fContext->resourceProvider()->findProxyByUniqueKey(key);
+    sk_sp<GrTextureProxy> proxy = fDesc.fContext->resourceProvider()->findProxyByUniqueKey(
+                                                                key, kTopLeft_GrSurfaceOrigin);
     if (!proxy) {
         GrSurfaceDesc texDesc;
         texDesc.fOrigin = kTopLeft_GrSurfaceOrigin;