message: Update style guide for absl::make_unique.
  No-Try: True
  Cr-Commit-Position: refs/heads/master@{#29216}
diff: @@ -12,7 +12,7 @@ adds the first use.
  ## **Allowed**
  * `absl::InlinedVector`
  -* `absl::make_unique` and `absl::WrapUnique`
  +* `absl::WrapUnique`
  * `absl::optional` and related stuff from `absl/types/optional.h`.
  * `absl::string_view`
  * The functions in `absl/strings/ascii.h`, `absl/strings/match.h`,
  @@ -28,6 +28,10 @@ adds the first use.
  ## **Disallowed**
  +### `absl::make_unique`
  +
  +*Use `std::make_unique` instead.*
  +
  ### `absl::Mutex`
  *Use `rtc::CriticalSection` instead.*
  