Add SkColorSpace to GrDrawContext

example/HelloWorld.h

 /*
  * Copyright 2015 Google Inc.
  *
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  */
 
 #ifndef HelloWorld_DEFINED
@@ skipping 18 matching lines @@
 
     // Changes the device type of the object.
     bool setUpBackend();
 
     DeviceType getDeviceType() const { return fType; }
 
 protected:
     SkSurface* createSurface() override {
         SkSurfaceProps props(INHERITED::getSurfaceProps());
         if (kGPU_DeviceType == fType) {
-            return SkSurface::MakeRenderTargetDirect(fRenderTarget, &props).release();
+            return SkSurface::MakeRenderTargetDirect(fRenderTarget, nullptr, &props).release();
         }
         static const SkImageInfo info = SkImageInfo::MakeN32Premul(
                 SkScalarRoundToInt(this->width()), SkScalarRoundToInt(this->height()));
         return fSurface = SkSurface::MakeRaster(info, &props).release();
     }
 
     void draw(SkCanvas* canvas) override;
     void drawContents(SkCanvas* canvas);
 
     void onSizeChange() override;
@@ skipping 13 matching lines @@
     SkSurface* fSurface;
     GrContext* fContext;
     GrRenderTarget* fRenderTarget;
     AttachmentInfo fAttachmentInfo;
     const GrGLInterface* fInterface;
 
     typedef SkOSWindow INHERITED;
 };
 
 #endif