[dart] add final, final required sources

Change-Id: Id36fba4a7758beb7c4ef1891e9bb7be527b8ae1f
diff --git a/lib/tiler/BUILD.gn b/lib/tiler/BUILD.gn
index 5d28ccd..e360e01 100644
--- a/lib/tiler/BUILD.gn
+++ b/lib/tiler/BUILD.gn
@@ -10,6 +10,9 @@
 
   sources = [
     "tiler.dart",
+    "src/tile.dart",
+    "src/tiler.dart",
+    "src/sizer.dart",
   ]
 
   deps = [
diff --git a/public/dart/composition_delegate/BUILD.gn b/public/dart/composition_delegate/BUILD.gn
index e7dd0a9..fbd6fb4 100644
--- a/public/dart/composition_delegate/BUILD.gn
+++ b/public/dart/composition_delegate/BUILD.gn
@@ -11,6 +11,13 @@
   sdk_category = "partner"
   sources = [
     "composition_delegate.dart",
+    "src/layout/layout_context.dart",
+    "src/layout/layout_types.dart",
+    "src/composition_delegate/composition_delegate.dart",
+    "src/surface/surface_relation.dart",
+    "src/surface/surface.dart",
+    "src/internal/tree/_surface_node.dart",
+    "src/internal/tree/_surface_tree.dart",
   ]
 
   deps = [
diff --git a/public/dart/fuchsia_inspect/BUILD.gn b/public/dart/fuchsia_inspect/BUILD.gn
index 57f798e..60103fc 100644
--- a/public/dart/fuchsia_inspect/BUILD.gn
+++ b/public/dart/fuchsia_inspect/BUILD.gn
@@ -19,6 +19,7 @@
     "src/heap.dart",
     "src/inspect.dart",
     "src/node.dart",
+    "src/util.dart",
     "src/vmo_fields.dart",
     "src/vmo_holder.dart",
     "src/vmo_writer.dart",
@@ -40,6 +41,7 @@
     "block_test.dart",
     "heap_test.dart",
     "inspect_test.dart",
+    "integration/writer.dart",
     "node_test.dart",
     "util.dart",
     "vmo_fields_test.dart",
diff --git a/public/dart/fuchsia_scenic_flutter/BUILD.gn b/public/dart/fuchsia_scenic_flutter/BUILD.gn
index 738f03e..b1dd72c 100644
--- a/public/dart/fuchsia_scenic_flutter/BUILD.gn
+++ b/public/dart/fuchsia_scenic_flutter/BUILD.gn
@@ -12,12 +12,20 @@
 
   source_dir = "lib"
 
+  # TODO(BLD-445): fix analysis errors in fuchsia_scenic_flutter
+  sources_required = false
+
   sources = [
     "child_view.dart",
     "child_view_connection.dart",
     "src/child_scene_layer.dart",
     "src/child_view.dart",
     "src/child_view_connection.dart",
+    # "view_container.dart",
+    # "src/view_container.dart",
+    # "src/view_container_listener_impl.dart",
+    # "src/internal/_mozart.dart",
+    # "src/internal/fakes/mozart_fakes.dart",
   ]
 
   deps = [