cc/paint: Remove PaintCanvas::peekPixels.

cc/paint/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_PAINT_CANVAS_H_
 #define CC_PAINT_PAINT_CANVAS_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "build/build_config.h"
@@ skipping 12 matching lines @@
 
   // TODO(enne): It would be nice to get rid of flush() entirely, as it
   // doesn't really make sense for recording.  However, this gets used by
   // SkCanvasVideoRenderer which takes a PaintCanvas to paint both
   // software and hardware video.  This is super entangled with ImageBuffer
   // and canvas/video painting in Blink where the same paths are used for
   // both recording and gpu work.
   virtual void flush() = 0;
 
   virtual SkISize getBaseLayerSize() const = 0;
-  virtual bool peekPixels(SkPixmap* pixmap) = 0;
   virtual bool readPixels(const SkImageInfo& dest_info,
                           void* dest_pixels,
                           size_t dest_row_bytes,
                           int src_x,
                           int src_y) = 0;
   virtual bool readPixels(SkBitmap* bitmap, int src_x, int src_y) = 0;
   virtual bool readPixels(const SkIRect& srcRect, SkBitmap* bitmap) = 0;
   virtual bool writePixels(const SkImageInfo& info,
                            const void* pixels,
                            size_t row_bytes,
@@ skipping 222 matching lines @@
                                                          const SkPoint& point,
                                                          SkData* data);
 
 CC_PAINT_EXPORT void PaintCanvasAnnotateLinkToDestination(PaintCanvas* canvas,
                                                           const SkRect& rect,
                                                           SkData* data);
 
 }  // namespace cc
 
 #endif  // CC_PAINT_PAINT_CANVAS_H_