[ Merge of http://go/wvgerrit/191139 ]
Adding an initial flag that include identifiable differences when
the feature is enabled or disabled.
This is the same commit as ag/25837302. It was reverted due to
memory size issues. A follow on CL will address that issue to
ease review.
Bug: 311951236
Test: WVTS tests
Change-Id: I995fb8f4158b3529c2d19a2ee5fd8beec0019f7c
54162b07c5