[roll] Roll cobalt [roll] Roll 4 submodules

boringssl 94a63a5b6..123eaaef2 (340 commits)
third_party/gflags fa0869a..8ddb949 (1 commit)
third_party/github.com/google/farmhash fffdd79..1ab1c33 (1 commit)
third_party/glog b886982..731dfc2 (1 commit)

Also edited the gtest build visibility TODO comment to clarify it
and point it to a still open bug.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/cobalt/+/656466
Original-Revision: efc22ffba69dbb8c6dd7140ded5ae05ead6e614e
GitOrigin-RevId: 592f69c38117ffdd6c9442e9d0a2c3ad01dbf827
Change-Id: Ied41889715b8152d4d3cd7ef0c6ad9281690a790
diff --git a/third_party/flower b/third_party/flower
index 4dd2673..2b12cc0 100644
--- a/third_party/flower
+++ b/third_party/flower
@@ -65,7 +65,7 @@
     <project name="cobalt"
              path="third_party/cobalt"
              remote="https://fuchsia.googlesource.com/cobalt"
-             revision="938c3844a92534e01b05ac30508c54f0881d22ce"
+             revision="efc22ffba69dbb8c6dd7140ded5ae05ead6e614e"
              gerrithost="https://fuchsia-review.googlesource.com"/>
     <project name="cobalt-registry"
              path="third_party/cobalt_config"