Add SkColorSpace to GrDrawContext

tests/ReadWriteAlphaTest.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 
 // This test is specific to the GPU backend.
@@ skipping 75 matching lines @@
             REPORTER_ASSERT_MESSAGE(reporter, result, "Initial A8 readPixels failed");
 
             // make sure the original & read back versions match
             SkString msg;
             msg.printf("rt:%d, rb:%d A8", rt, SkToU32(rowBytes));
             validate_alpha_data(reporter, X_SIZE, Y_SIZE, readback.get(), nonZeroRowBytes,
                                 alphaData, msg);
 
             // Now try writing on the single channel texture (if we could create as a RT).
             if (texture->asRenderTarget()) {
-                sk_sp<SkSurface> surf(SkSurface::MakeRenderTargetDirect(texture->asRenderTarget()));
+                sk_sp<SkSurface> surf(SkSurface::MakeRenderTargetDirect(texture->asRenderTarget(),
+                                                                        nullptr));
                 SkCanvas* canvas = surf->getCanvas();
 
                 SkPaint paint;
 
                 const SkRect rect = SkRect::MakeLTRB(-10, -10, X_SIZE + 10, Y_SIZE + 10);
 
                 paint.setColor(SK_ColorWHITE);
 
                 canvas->drawRect(rect, paint);
 
@@ skipping 75 matching lines @@
                 SkString msg;
                 msg.printf("rt:%d, rb:%d 8888", rt, SkToU32(rowBytes));
                 validate_alpha_data(reporter, X_SIZE, Y_SIZE, readback.get(), nonZeroRowBytes,
                                     alphaData, msg);
             }
         }
     }
 }
 
 #endif