cc/paint: Remove cc::PaintSurface.

cc/paint/skia_paint_canvas.h

 // Copyright 2017 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 CC_PAINT_SKIA_PAINT_CANVAS_H_
 #define CC_PAINT_SKIA_PAINT_CANVAS_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "cc/paint/paint_canvas.h"
 #include "cc/paint/paint_flags.h"
 #include "cc/paint/paint_record.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 
 namespace cc {
 
 class PaintFlags;
 
 // A PaintCanvas derived class that passes PaintCanvas APIs through to
 // an SkCanvas.  This is more efficient than recording to a PaintRecord
 // and then playing back to an SkCanvas.
 class CC_PAINT_EXPORT SkiaPaintCanvas final : public PaintCanvas {
  public:
+  // Creates a raster canvas with the memory for the pixels automatically
+  // allocated and zero-initialized. Returns null on failure.
+  static std::unique_ptr<SkiaPaintCanvas> CreateRasterZeroed(
+      const SkImageInfo& info);
+
   explicit SkiaPaintCanvas(SkCanvas* canvas);
   explicit SkiaPaintCanvas(const SkBitmap& bitmap);
   explicit SkiaPaintCanvas(const SkBitmap& bitmap, const SkSurfaceProps& props);
   ~SkiaPaintCanvas() override;
 
   SkMetaData& getMetaData() override;
   SkImageInfo imageInfo() const override;
 
   void flush() override;
 
@@ skipping 123 matching lines @@
   using PaintCanvas::drawPicture;
 
  private:
   SkCanvas* canvas_;
   std::unique_ptr<SkCanvas> owned_;
 };
 
 }  // namespace cc
 
 #endif  // CC_PAINT_SKIA_PAINT_CANVAS_H_