Assert when running SampleApp with msaa 16 on Windows 10

src/utils/win/SkWGL_win.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 "SkWGL.h"
 
@@ skipping 105 matching lines @@
         return true;
     }
     return false;
 }
 }
 
 int SkWGLExtensions::selectFormat(const int formats[],
                                   int formatCount,
                                   HDC dc,
                                   int desiredSampleCount) const {
+    if (formatCount <= 0) {
+        return -1;
+    }
     PixelFormat desiredFormat = {
         0,
         desiredSampleCount,
         0,
     };
     SkTDArray<PixelFormat> rankedFormats;
     rankedFormats.setCount(formatCount);
     for (int i = 0; i < formatCount; ++i) {
         static const int kQueryAttr = SK_WGL_SAMPLES;
         int numSamples;
@@ skipping 312 matching lines @@
     wglDeleteContext(fGLRC);
     fExtensions.releasePbufferDC(fPbuffer, fDC);
     fExtensions.destroyPbuffer(fPbuffer);
 }
 
 SkWGLPbufferContext::SkWGLPbufferContext(HPBUFFER pbuffer, HDC dc, HGLRC glrc)
     : fPbuffer(pbuffer)
     , fDC(dc)
     , fGLRC(glrc) {
 }