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/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index 5667f41..93877c1 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -1507,12 +1507,9 @@
             break;
         case SkCommandLineConfigGpu::SurfType::kBackendRenderTarget:
             if (1 == fSampleCount) {
-                auto srgbEncoded = info.colorSpace() && info.colorSpace()->gammaCloseToSRGB()
-                                           ? GrSRGBEncoded::kYes
-                                           : GrSRGBEncoded::kNo;
                 auto colorType = SkColorTypeToGrColorType(info.colorType());
                 backendRT = context->contextPriv().getGpu()->createTestingOnlyBackendRenderTarget(
-                        info.width(), info.height(), colorType, srgbEncoded);
+                        info.width(), info.height(), colorType);
                 surface = SkSurface::MakeFromBackendRenderTarget(
                         context, backendRT, kBottomLeft_GrSurfaceOrigin, info.colorType(),
                         info.refColorSpace(), &props);