[fuchsia] Add explicit sources to a few targets. (#15182)

packages/flutter/BUILD.gn

@@ -9,6 +9,21 @@ dart_library("flutter") {
 
   disable_analysis = true
 
+  sources = [
+    "animation.dart",
+    "cupertino.dart",
+    "foundation.dart",
+    "gestures.dart",
+    "material.dart",
+    "painting.dart",
+    "physics.dart",
+    "rendering.dart",
+    "scheduler.dart",
+    "semantics.dart",
+    "services.dart",
+    "widgets.dart",
+  ]
+
   deps = [
     "//third_party/dart/third_party/pkg/intl",
     "//third_party/dart-pkg/pub/async",

packages/flutter_test/BUILD.gn

@@ -7,6 +7,10 @@ import("//build/dart/dart_library.gni")
 dart_library("flutter_test") {
   package_name = "flutter_test"
 
+  sources = [
+    "flutter_test.dart",
+  ]
+
   disable_analysis = true
 
   deps = [

packages/flutter_tools/BUILD.gn

@@ -8,6 +8,11 @@ import("//build/dart/dart_tool.gni")
 dart_library("flutter_tools") {
   package_name = "flutter_tools"
 
+  sources = [
+    "executable.dart",
+    "runner.dart",
+  ]
+
   disable_analysis = true
 
   deps = [