Reduce dependence on GrSurface's origin field (take 2)

TBR=bsalomon@google.com
Change-Id: Ia238fc66b0fe10a3626c7967b2ac1f1a4bf4cd71
Reviewed-on: https://skia-review.googlesource.com/25800
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrBitmapTextureMaker.cpp b/src/gpu/GrBitmapTextureMaker.cpp
index 6fb2c6a..85e791e 100644
--- a/src/gpu/GrBitmapTextureMaker.cpp
+++ b/src/gpu/GrBitmapTextureMaker.cpp
@@ -37,7 +37,8 @@
     sk_sp<GrTextureProxy> proxy;
 
     if (fOriginalKey.isValid()) {
-        proxy = this->context()->resourceProvider()->findProxyByUniqueKey(fOriginalKey);
+        proxy = this->context()->resourceProvider()->findProxyByUniqueKey(
+                                                          fOriginalKey, kTopLeft_GrSurfaceOrigin);
         if (proxy) {
             return proxy;
         }