Skip alloc by placing SkiaPaintCanvas on stack

Partial land of https://chromium-review.googlesource.com/c/chromium/src/+/1476977

Change-Id: Ib2ba65e026db6429c88d64141334fcfcdc440d2a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1529071
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641709}

third_party/blink/renderer/core/layout/shapes/shape.cc

@@ -255,14 +255,11 @@ static bool ExtractImageData(Image* image,
   PaintFlags flags;
   FloatRect image_source_rect(FloatPoint(), FloatSize(image->Size()));
   IntRect image_dest_rect(IntPoint(), image_size);
-  // TODO(ccameron): No color conversion is required here.
-  std::unique_ptr<cc::PaintCanvas> canvas =
-      color_params.WrapCanvas(surface->getCanvas());
-  canvas->save();
-  canvas->clear(SK_ColorTRANSPARENT);
-
-  image->Draw(canvas.get(), flags, FloatRect(image_dest_rect),
-              image_source_rect, kDoNotRespectImageOrientation,
+  SkiaPaintCanvas canvas(surface->getCanvas());
+  canvas.clear(SK_ColorTRANSPARENT);
+
+  image->Draw(&canvas, flags, FloatRect(image_dest_rect), image_source_rect,
+              kDoNotRespectImageOrientation,
               Image::kDoNotClampImageToSourceRect, Image::kSyncDecode);
 
   return StaticBitmapImage::ConvertToArrayBufferContents(