Supply a color space in sRGB/F16 mode of SampleApp

src/views/SkWindow.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkWindow.h"
 #include "SkCanvas.h"
 #include "SkOSMenu.h"
@@ skipping 334 matching lines @@
         SkImageInfoIsGammaCorrect(info()) &&
         (attachmentInfo.fColorBits != 30)
         ? kSkiaGamma8888_GrPixelConfig : kSkia8888_GrPixelConfig;
     desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
     desc.fSampleCnt = attachmentInfo.fSampleCount;
     desc.fStencilBits = attachmentInfo.fStencilBits;
     GrGLint buffer;
     GR_GL_GetIntegerv(interface, GR_GL_FRAMEBUFFER_BINDING, &buffer);
     desc.fRenderTargetHandle = buffer;
 
-    return SkSurface::MakeFromBackendRenderTarget(grContext, desc, &fSurfaceProps);
+    sk_sp<SkColorSpace> colorSpace =
+        grContext->caps()->srgbSupport() && SkImageInfoIsGammaCorrect(info())
+        ? SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named) : nullptr;
+    return SkSurface::MakeFromBackendRenderTarget(grContext, desc, colorSpace, &fSurfaceProps);
 }
 
 #endif