Update from https://crrev.com/307330

sky/engine/platform/graphics/LoggingCanvas.h

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 #include "sky/engine/platform/JSONValues.h"
 #include "sky/engine/platform/graphics/InterceptingCanvas.h"
 
 namespace blink {
 
 class LoggingCanvas : public InterceptingCanvas {
 public:
     LoggingCanvas(int width, int height);
     PassRefPtr<JSONArray> log();
 
-    virtual void clear(SkColor) override;
     virtual void drawPaint(const SkPaint&) override;
     virtual void drawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
     virtual void drawRect(const SkRect&, const SkPaint&) override;
     virtual void drawOval(const SkRect&, const SkPaint&) override;
     virtual void drawRRect(const SkRRect&, const SkPaint&) override;
     virtual void drawPath(const SkPath&, const SkPaint&) override;
     virtual void drawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint* = 0) override;
     virtual void drawBitmapRectToRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*, DrawBitmapRectFlags) override;
     virtual void drawBitmapMatrix(const SkBitmap&, const SkMatrix&, const SkPaint* = 0) override;
     virtual void drawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst, const SkPaint*) override;
@@ skipping 75 matching lines @@
     String regionOpName(SkRegion::Op);
     String saveFlagsToString(SkCanvas::SaveFlags);
     String textEncodingCanonicalName(SkPaint::TextEncoding);
     String stringForUTFText(const void* text, size_t length, SkPaint::TextEncoding);
     String stringForText(const void* text, size_t byteLength, const SkPaint&);
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_PLATFORM_GRAPHICS_LOGGINGCANVAS_H_