sdk: add snappy and giflib BDEPEND for federated-service

BUG=b:241323595
TEST=None

Change-Id: I68ff9f7a701b53957d3691ebe1e957a0a8f703fa
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/3829021
Reviewed-by: Andrew Moylan <amoylan@chromium.org>
Tested-by: Xinglong Luan <alanlxl@chromium.org>
Commit-Queue: Xinglong Luan <alanlxl@chromium.org>
Auto-Submit: Xinglong Luan <alanlxl@chromium.org>
diff --git a/virtual/target-chromium-os-sdk/target-chromium-os-sdk-9999.ebuild b/virtual/target-chromium-os-sdk/target-chromium-os-sdk-9999.ebuild
index f1ddff8..7d71d09 100644
--- a/virtual/target-chromium-os-sdk/target-chromium-os-sdk-9999.ebuild
+++ b/virtual/target-chromium-os-sdk/target-chromium-os-sdk-9999.ebuild
@@ -605,3 +605,8 @@
 # Needed for vkbench.
 RDEPEND="${RDEPEND}
 	dev-util/glslang"
+
+# Needed for federated-service.
+RDEPEND="${RDEPEND}
+	app-arch/snappy
+	media-libs/giflib"