Remove old sRGB config support from backend render target tool utilities

Bug: skia:
Change-Id: Ie88c16ddb2b072d8bdd7efc3acabc1d9ad89012f
Reviewed-on: https://skia-review.googlesource.com/146526
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/tests/ProxyTest.cpp b/tests/ProxyTest.cpp
index 69db12d..694adf4 100644
--- a/tests/ProxyTest.cpp
+++ b/tests/ProxyTest.cpp
@@ -209,8 +209,7 @@
             // sample counts :(.
             if (ctxInfo.grContext()->colorTypeSupportedAsSurface(colorType)) {
                 GrBackendRenderTarget backendRT = gpu->createTestingOnlyBackendRenderTarget(
-                        kWidthHeight, kWidthHeight, SkColorTypeToGrColorType(colorType),
-                        GrSRGBEncoded::kNo);
+                        kWidthHeight, kWidthHeight, SkColorTypeToGrColorType(colorType));
                 sk_sp<GrSurfaceProxy> sProxy(
                         proxyProvider->wrapBackendRenderTarget(backendRT, origin));
                 check_surface(reporter, sProxy.get(), origin, kWidthHeight, kWidthHeight,