Update from https://crrev.com/317530

skia/ext/platform_device.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SKIA_EXT_PLATFORM_DEVICE_H_
 #define SKIA_EXT_PLATFORM_DEVICE_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
@@ skipping 113 matching lines @@
   // Loads a SkRegion into the GDI context.
   static void LoadClippingRegionToDC(HDC context, const SkRegion& region,
                                      const SkMatrix& transformation);
 
   // Draws to the given screen DC, if the bitmap DC doesn't exist, this will
   // temporarily create it. However, if you have created the bitmap DC, it will
   // be more efficient if you don't free it until after this call so it doesn't
   // have to be created twice.  If src_rect is null, then the entirety of the
   // source device will be copied.
   virtual void DrawToHDC(HDC, int x, int y, const RECT* src_rect);
-    
-#elif defined(OS_MACOSX)
-  // Loads a SkPath into the CG context. The path can there after be used for
-  // clipping or as a stroke.
-  static void LoadPathToCGContext(CGContextRef context, const SkPath& path);
-
-  // Initializes the default settings and colors in a device context.
-  static void InitializeCGContext(CGContextRef context);
-
-  // Loads a SkRegion into the CG context.
-  static void LoadClippingRegionToCGContext(CGContextRef context,
-                                            const SkRegion& region,
-                                            const SkMatrix& transformation);
 #endif
 
  protected:
 #if defined(OS_WIN)
   // Arrays must be inside structures.
   struct CubicPoints {
     SkPoint p[4];
   };
   typedef std::vector<CubicPoints> CubicPath;
   typedef std::vector<CubicPath> CubicPaths;
 
   // Loads the specified Skia transform into the device context, excluding
   // perspective (which GDI doesn't support).
   static void LoadTransformToDC(HDC dc, const SkMatrix& matrix);
 
   // Transforms SkPath's paths into a series of cubic path.
   static bool SkPathToCubicPaths(CubicPaths* paths, const SkPath& skpath);
-#elif defined(OS_MACOSX)
-  // Loads the specified Skia transform into the device context
-  static void LoadTransformToCGContext(CGContextRef context,
-                                       const SkMatrix& matrix);
 #endif
 };
 
 }  // namespace skia
 
 #endif  // SKIA_EXT_PLATFORM_DEVICE_H_