Don't draw if SkShader::asNewFragmentProcessor fails.

gm/constcolorprocessor.cpp

 
 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // This test only works with the GPU backend.
 
@@ skipping 86 matching lines @@
                         return;
                     }
 
                     GrPaint grPaint;
                     SkPaint skPaint;
                     if (paintType >= SK_ARRAY_COUNT(kPaintColors)) {
                         skPaint.setShader(fShader);
                     } else {
                         skPaint.setColor(kPaintColors[paintType]);
                     }
-                    SkPaint2GrPaintShader(context, rt, skPaint, viewMatrix, false, &grPaint);
+                    SkAssertResult(SkPaint2GrPaint(context, rt, skPaint, viewMatrix, false,
+                                                   &grPaint));
 
                     GrConstColorProcessor::InputMode mode = (GrConstColorProcessor::InputMode) m;
                     GrColor color = kColors[procColor];
                     SkAutoTUnref<GrFragmentProcessor> fp(GrConstColorProcessor::Create(color, mode));
 
                     GrPipelineBuilder pipelineBuilder;
                     GrClip clip;
                     pipelineBuilder.setFromPaint(grPaint, rt, clip);
                     pipelineBuilder.addColorProcessor(fp);
 
@@ skipping 70 matching lines @@
     typedef GM INHERITED;
 };
 
 const SkScalar ConstColorProcessor::kPad = 10.f;
 const SkScalar ConstColorProcessor::kRectSize = 20.f;
 
 DEF_GM( return SkNEW(ConstColorProcessor); )
 }
 
 #endif