Move Work From CompositorFrameSinkSupport() To Init()

cc/surfaces/compositor_frame_sink_support_unittest.cc

Index: cc/surfaces/compositor_frame_sink_support_unittest.cc
diff --git a/cc/surfaces/compositor_frame_sink_support_unittest.cc b/cc/surfaces/compositor_frame_sink_support_unittest.cc
index 44771bfffaaa919917cefdf9d9ddd0cc19da079f..060c31d18a85f51f82d8a3bc7b7c32a7fe0137ca 100644
--- a/cc/surfaces/compositor_frame_sink_support_unittest.cc
+++ b/cc/surfaces/compositor_frame_sink_support_unittest.cc
@@ -178,18 +178,22 @@ class CompositorFrameSinkSupportTest : public testing::Test {
         &support_client_, &surface_manager_, kDisplayFrameSink,
         true /* is_root */, true /* handles_frame_sink_id_invalidation */,
         true /* needs_sync_points */));
+    supports_.back()->Init();
     supports_.push_back(base::MakeUnique<CompositorFrameSinkSupport>(
         &support_client_, &surface_manager_, kParentFrameSink,
         false /* is_root */, true /* handles_frame_sink_id_invalidation */,
         true /* needs_sync_points */));
+    supports_.back()->Init();
     supports_.push_back(base::MakeUnique<CompositorFrameSinkSupport>(
         &support_client_, &surface_manager_, kChildFrameSink1,
         false /* is_root */, true /* handles_frame_sink_id_invalidation */,
         true /* needs_sync_points */));
+    supports_.back()->Init();
     supports_.push_back(base::MakeUnique<CompositorFrameSinkSupport>(
         &support_client_, &surface_manager_, kChildFrameSink2,
         false /* is_root */, true /* handles_frame_sink_id_invalidation */,
         true /* needs_sync_points */));
+    supports_.back()->Init();
 
     // Normally, the BeginFrameSource would be registered by the Display. We
     // register it here so that BeginFrames are received by the display support,