Update from https://crrev.com/308996

sky/engine/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 367 matching lines @@
 {
     if (contextDisabled())
         return;
 
     if (!paint->isLCDRenderText())
         return;
 
     paint->setLCDRenderText(couldUseLCDRenderedText());
 }
 
-bool GraphicsContext::couldUseLCDRenderedText()
-{
-    // Our layers only have a single alpha channel. This means that subpixel
-    // rendered text cannot be composited correctly when the layer is
-    // collapsed. Therefore, subpixel text is contextDisabled when we are drawing
-    // onto a layer.
-    if (contextDisabled() || m_canvas->isDrawingToLayer() || !isCertainlyOpaque())
-        return false;
-
-    return shouldSmoothFonts();
-}
-
 void GraphicsContext::setCompositeOperation(CompositeOperator compositeOperation, WebBlendMode blendMode)
 {
     if (contextDisabled())
         return;
     mutableState()->setCompositeOperation(compositeOperation, blendMode);
 }
 
 SkColorFilter* GraphicsContext::colorFilter() const
 {
     return immutableState()->colorFilter();
@@ skipping 1437 matching lines @@
         // 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);
     paint->setFilterLevel(static_cast<SkPaint::FilterLevel>(resampling));
 }
 
 } // namespace blink