WIP: Fix foreignObject cullrect

cc/test/fake_display_list_raster_source.cc

Index: cc/test/fake_display_list_raster_source.cc
diff --git a/cc/test/fake_display_list_raster_source.cc b/cc/test/fake_display_list_raster_source.cc
index 8acca504aa6ca2e4c2d0029d1998ef70eed59386..e64c0d647902647ba5a5f5e7feb85b9fa8247cec 100644
--- a/cc/test/fake_display_list_raster_source.cc
+++ b/cc/test/fake_display_list_raster_source.cc
@@ -25,15 +25,14 @@ FakeDisplayListRasterSource::CreateFilled(const gfx::Size& size) {
   auto recording_source =
       FakeDisplayListRecordingSource::CreateFilledRecordingSource(size);
 
-  SkPaint red_paint;
-  red_paint.setColor(SK_ColorRED);
-  recording_source->add_draw_rect_with_paint(gfx::Rect(size), red_paint);
-
-  gfx::Size smaller_size(size.width() - 10, size.height() - 10);
-  SkPaint green_paint;
-  green_paint.setColor(SK_ColorGREEN);
-  recording_source->add_draw_rect_with_paint(gfx::Rect(smaller_size),
-                                             green_paint);
+  SkPaint salmon_pink_paint;
+  salmon_pink_paint.setColor(SK_ColorRED);
+  // Set an arbitrary non-opaque alpha in order to force the source non-solid.
+  // There are a number of ways to ensure the raster source is not solid. This
+  // is just one of them.
+  salmon_pink_paint.setAlpha(127);
+  recording_source->add_draw_rect_with_paint(gfx::Rect(size),
+                                             salmon_pink_paint);
 
   recording_source->Rerecord();