Support waiting for surfaceflinger service to stop before test starts

Bug: 168787663
Test: atest VtsHalGraphicsComposerV2_1TargetTest \
  VtsHalGraphicsComposerV2_2TargetTest \
  VtsHalGraphicsComposerV2_3TargetTest
Change-Id: I1219b8446ca3ac3d22f3fd6ab72cd8a214f55545
diff --git a/graphics/composer/2.3/vts/functional/Android.bp b/graphics/composer/2.3/vts/functional/Android.bp
index 1ab6b3b..1cbb60e 100644
--- a/graphics/composer/2.3/vts/functional/Android.bp
+++ b/graphics/composer/2.3/vts/functional/Android.bp
@@ -21,6 +21,7 @@
 
     // TODO(b/64437680): Assume these libs are always available on the device.
     shared_libs: [
+        "libbase",
         "libfmq",
         "libhidlbase",
         "libsync",