paint: Introduce PaintImage that wraps SkImage in paint calls.

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 "base/memory/ref_counted.h"
 #include "build/build_config.h"
 #include "cc/paint/paint_export.h"
+#include "cc/paint/paint_image.h"
 #include "cc/paint/paint_record.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 
 namespace cc {
 
 class DisplayItemList;
 class PaintFlags;
 
 class CC_PAINT_EXPORT PaintCanvas {
  public:
@@ skipping 90 matching lines @@
   virtual void drawArc(const SkRect& oval,
                        SkScalar start_angle,
                        SkScalar sweep_angle,
                        bool use_center,
                        const PaintFlags& flags) = 0;
   virtual void drawRoundRect(const SkRect& rect,
                              SkScalar rx,
                              SkScalar ry,
                              const PaintFlags& flags) = 0;
   virtual void drawPath(const SkPath& path, const PaintFlags& flags) = 0;
-  virtual void drawImage(sk_sp<const SkImage> image,
+  virtual void drawImage(const PaintImage& image,
                          SkScalar left,
                          SkScalar top,
                          const PaintFlags* flags) = 0;
-  void drawImage(sk_sp<const SkImage> image, SkScalar left, SkScalar top) {
+  void drawImage(const PaintImage& image, SkScalar left, SkScalar top) {
     drawImage(image, left, top, nullptr);
   }
 
   enum SrcRectConstraint {
     kStrict_SrcRectConstraint = SkCanvas::kStrict_SrcRectConstraint,
     kFast_SrcRectConstraint = SkCanvas::kFast_SrcRectConstraint,
   };
 
-  virtual void drawImageRect(sk_sp<const SkImage> image,
+  virtual void drawImageRect(const PaintImage& image,
                              const SkRect& src,
                              const SkRect& dst,
                              const PaintFlags* flags,
                              SrcRectConstraint constraint) = 0;
   virtual void drawBitmap(const SkBitmap& bitmap,
                           SkScalar left,
                           SkScalar top,
                           const PaintFlags* flags) = 0;
   void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top) {
     drawBitmap(bitmap, left, top, nullptr);
@@ skipping 87 matching lines @@
 // Following routines are used in print preview workflow to mark the
 // preview metafile.
 #if defined(OS_MACOSX)
 CC_PAINT_EXPORT void SetIsPreviewMetafile(PaintCanvas* canvas, bool is_preview);
 CC_PAINT_EXPORT bool IsPreviewMetafile(PaintCanvas* canvas);
 #endif
 
 }  // namespace cc
 
 #endif  // CC_PAINT_PAINT_CANVAS_H_