Add ability to remove unique key from proxy and underlying surface.

Bug: skia:
Change-Id: I66b891ce9ca35906fdbddb36f565b35b25825112
Reviewed-on: https://skia-review.googlesource.com/51240
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrBitmapTextureMaker.cpp b/src/gpu/GrBitmapTextureMaker.cpp
index 2bf3afe..6654901 100644
--- a/src/gpu/GrBitmapTextureMaker.cpp
+++ b/src/gpu/GrBitmapTextureMaker.cpp
@@ -37,7 +37,7 @@
     sk_sp<GrTextureProxy> proxy;
 
     if (fOriginalKey.isValid()) {
-        proxy = this->context()->resourceProvider()->findProxyByUniqueKey(
+        proxy = this->context()->resourceProvider()->findOrCreateProxyByUniqueKey(
                                                           fOriginalKey, kTopLeft_GrSurfaceOrigin);
         if (proxy) {
             return proxy;