Revert 147915 - Cleanup gfx::Canvas now that 10562027 has landed

ui/views/controls/tree/tree_view_win.cc

Index: ui/views/controls/tree/tree_view_win.cc
===================================================================
--- ui/views/controls/tree/tree_view_win.cc	(revision 147935)
+++ ui/views/controls/tree/tree_view_win.cc	(working copy)
@@ -691,15 +691,13 @@
       // IDR_FOLDER_CLOSED if they aren't already.
       if (model_images[i].width() != width ||
           model_images[i].height() != height) {
-        gfx::Canvas canvas(gfx::Size(width, height), ui::SCALE_FACTOR_100P,
-            false);
+        gfx::Canvas canvas(gfx::Size(width, height), false);
 
         // Draw our icons into this canvas.
         int height_offset = (height - model_images[i].height()) / 2;
         int width_offset = (width - model_images[i].width()) / 2;
         canvas.DrawImageInt(model_images[i], width_offset, height_offset);
-        model_icon = IconUtil::CreateHICONFromSkBitmap(
-            canvas.ExtractImageRep().sk_bitmap());
+        model_icon = IconUtil::CreateHICONFromSkBitmap(canvas.ExtractBitmap());
       } else {
         model_icon = IconUtil::CreateHICONFromSkBitmap(model_images[i]);
       }