Match html canvas which is transferred to OffscreenCanvas to CSS style

cc/layers/surface_layer.cc

Index: cc/layers/surface_layer.cc
diff --git a/cc/layers/surface_layer.cc b/cc/layers/surface_layer.cc
index 0f8bd3380be1aa873bf5ed197dcafabad45a9c51..7f56830ed9c9577930a4569d02d329d8ace07c4f 100644
--- a/cc/layers/surface_layer.cc
+++ b/cc/layers/surface_layer.cc
@@ -51,8 +51,7 @@ scoped_refptr<SurfaceLayer> SurfaceLayer::Create(
 
 SurfaceLayer::SurfaceLayer(const SatisfyCallback& satisfy_callback,
                            const RequireCallback& require_callback)
-    : surface_scale_(1.f),
-      satisfy_callback_(satisfy_callback),
+    : satisfy_callback_(satisfy_callback),
       require_callback_(require_callback) {}
 
 SurfaceLayer::~SurfaceLayer() {
@@ -62,11 +61,13 @@ SurfaceLayer::~SurfaceLayer() {
 
 void SurfaceLayer::SetSurfaceId(const SurfaceId& surface_id,
                                 float scale,
-                                const gfx::Size& size) {
+                                const gfx::Size& size,
+                                bool stretch_content_to_fill_bounds) {
   SatisfyDestroySequence();
   surface_id_ = surface_id;
   surface_size_ = size;
   surface_scale_ = scale;
+  stretch_content_to_fill_bounds_ = stretch_content_to_fill_bounds;
   CreateNewDestroySequence();
 
   UpdateDrawsContent(HasDrawableContent());
@@ -101,6 +102,7 @@ void SurfaceLayer::PushPropertiesTo(LayerImpl* layer) {
   layer_impl->SetSurfaceId(surface_id_);
   layer_impl->SetSurfaceSize(surface_size_);
   layer_impl->SetSurfaceScale(surface_scale_);
+  layer_impl->SetStretchContentToFillBounds(stretch_content_to_fill_bounds_);
 }
 
 void SurfaceLayer::CreateNewDestroySequence() {