Remove convertToSkiaFilterLevel()

Source/platform/graphics/GraphicsContext.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1879 matching lines @@
             isDataComplete);
     }
 
     if (resampling == InterpolationNone) {
         // FIXME: This is to not break tests (it results in the filter bitmap flag
         // being set to true). We need to decide if we respect InterpolationNone
         // being returned from computeInterpolationQuality.
         resampling = InterpolationLow;
     }
     resampling = limitInterpolationQuality(this, resampling);
-
-    bool useBicubicFilter = resampling == InterpolationHigh;
-    paint->setFilterLevel(convertToSkiaFilterLevel(useBicubicFilter, resampling));
+    paint->setFilterLevel(static_cast<SkPaint::FilterLevel>(resampling));
 }
 
 }