[NOT FOR COMMIT] Fully replace SkCanvas uses.

cc/layers/painted_scrollbar_layer.cc

 // Copyright 2013 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.
 
 #include "cc/layers/painted_scrollbar_layer.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "cc/base/math_util.h"
@@ skipping 245 matching lines @@
 
 UIResourceBitmap PaintedScrollbarLayer::RasterizeScrollbarPart(
     const gfx::Rect& layer_rect,
     const gfx::Rect& content_rect,
     ScrollbarPart part) {
   DCHECK(!content_rect.size().IsEmpty());
   DCHECK(!layer_rect.size().IsEmpty());
 
   SkBitmap skbitmap;
   skbitmap.allocN32Pixels(content_rect.width(), content_rect.height());
-  SkCanvas skcanvas(skbitmap);
+  CdlCanvas canvas(skbitmap);
 
   float scale_x =
       content_rect.width() / static_cast<float>(layer_rect.width());
   float scale_y =
       content_rect.height() / static_cast<float>(layer_rect.height());
 
-  skcanvas.scale(SkFloatToScalar(scale_x),
-                 SkFloatToScalar(scale_y));
-  skcanvas.translate(SkFloatToScalar(-layer_rect.x()),
-                     SkFloatToScalar(-layer_rect.y()));
+  canvas.scale(SkFloatToScalar(scale_x), SkFloatToScalar(scale_y));
+  canvas.translate(SkFloatToScalar(-layer_rect.x()),
+                   SkFloatToScalar(-layer_rect.y()));
 
   SkRect layer_skrect = RectToSkRect(layer_rect);
-  SkPaint paint;
+  CdlPaint paint;
   paint.setAntiAlias(false);
   paint.setBlendMode(SkBlendMode::kClear);
-  skcanvas.drawRect(layer_skrect, paint);
-  skcanvas.clipRect(layer_skrect);
+  canvas.drawRect(layer_skrect, paint);
+  canvas.clipRect(layer_skrect);
 
-  scrollbar_->PaintPart(&skcanvas, part, layer_rect);
+  scrollbar_->PaintPart(&canvas, part, layer_rect);
   // Make sure that the pixels are no longer mutable to unavoid unnecessary
   // allocation and copying.
   skbitmap.setImmutable();
 
   return UIResourceBitmap(skbitmap);
 }
 
 }  // namespace cc