Replace usage of SurfaceId's client_id with FrameSinkId

cc/trees/surface_sequence_generator_unittest.cc

Index: cc/trees/surface_sequence_generator_unittest.cc
diff --git a/cc/trees/surface_sequence_generator_unittest.cc b/cc/trees/surface_sequence_generator_unittest.cc
index 90c6ce9617b559a69389755386fa12ab5ea5fc3c..3e4c066e8e1d2d809b21ba5c010041a0f78c908d 100644
--- a/cc/trees/surface_sequence_generator_unittest.cc
+++ b/cc/trees/surface_sequence_generator_unittest.cc
@@ -10,9 +10,11 @@
 namespace cc {
 namespace {
 
+static constexpr FrameSinkId kArbitraryFrameSinkId(1, 1);
+
 TEST(SurfaceSequenceGeneratorTest, Basic) {
   SurfaceSequenceGenerator generator;
-  generator.set_surface_client_id(5);
+  generator.set_frame_sink_id(kArbitraryFrameSinkId);
   SurfaceSequence sequence1 = generator.CreateSurfaceSequence();
   SurfaceSequence sequence2 = generator.CreateSurfaceSequence();
   EXPECT_NE(sequence1, sequence2);