True by default for EffectNode::double_sided and TransformNode::flattens_inherited_transform

They are true more commonly in real world and tests. This doesn't
affect production code because they are always initialized by
cc::PropertyTreeBuilder or blink::PropertyTreeManager. Their cc::Layer
corresponding values (to be removed as BlinkGenPropertyTree has
launched) are already true by default.

This affects only tests that create the nodes directly, e.g. those
using the functions defined in property_tree_test_utils.h.

Bug: 994361
Change-Id: I6be1ef0355c11cd7c3c124d020c487aac2958456
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1770038
Commit-Queue: Xianzhu Wang <[email protected]>
Reviewed-by: Philip Rogers <[email protected]>
Cr-Commit-Position: refs/heads/master@{#690434}
4 files changed