Force upgrade update packages with improved update process. (#12412)

* Force upgrade update packages with improved update process.

* Update packages

* Revert "Update packages"

This reverts commit a37de26d3f4f7f5a15746ff791002625faa3d3c0.
diff --git a/examples/flutter_gallery/pubspec.yaml b/examples/flutter_gallery/pubspec.yaml
index 8580720..e6b6bba 100644
--- a/examples/flutter_gallery/pubspec.yaml
+++ b/examples/flutter_gallery/pubspec.yaml
@@ -21,55 +21,34 @@
 
   args: 0.13.7 # TRANSITIVE DEPENDENCY
   async: 1.13.3 # TRANSITIVE DEPENDENCY
-  barback: 0.15.2+11 # TRANSITIVE DEPENDENCY
-  boolean_selector: 1.0.2 # TRANSITIVE DEPENDENCY
+  barback: 0.15.2+12 # TRANSITIVE DEPENDENCY
   charcode: 1.1.1 # TRANSITIVE DEPENDENCY
   cli_util: 0.1.2+1 # TRANSITIVE DEPENDENCY
   convert: 2.0.1 # TRANSITIVE DEPENDENCY
   crypto: 2.0.2+1 # TRANSITIVE DEPENDENCY
   csslib: 0.14.1 # TRANSITIVE DEPENDENCY
   dart_style: 1.0.8 # TRANSITIVE DEPENDENCY
-  file: 2.3.4 # TRANSITIVE DEPENDENCY
-  glob: 1.1.3 # TRANSITIVE DEPENDENCY
+  glob: 1.1.5 # TRANSITIVE DEPENDENCY
   html: 0.13.2 # TRANSITIVE DEPENDENCY
   http: 0.11.3+14 # TRANSITIVE DEPENDENCY
-  http_multi_server: 2.0.3 # TRANSITIVE DEPENDENCY
   http_parser: 3.1.1 # TRANSITIVE DEPENDENCY
   intl_translation: 0.15.0 # TRANSITIVE DEPENDENCY
   isolate: 1.1.0 # TRANSITIVE DEPENDENCY
-  js: 0.6.1 # TRANSITIVE DEPENDENCY
-  json_rpc_2: 2.0.4 # TRANSITIVE DEPENDENCY
   logging: 0.11.3+1 # TRANSITIVE DEPENDENCY
   matcher: 0.12.1+4 # TRANSITIVE DEPENDENCY
   meta: 1.1.1 # TRANSITIVE DEPENDENCY
-  mime: 0.9.3 # TRANSITIVE DEPENDENCY
-  node_preamble: 1.4.0 # TRANSITIVE DEPENDENCY
-  package_config: 1.0.2 # TRANSITIVE DEPENDENCY
-  package_resolver: 1.0.2 # TRANSITIVE DEPENDENCY
+  package_config: 1.0.3 # TRANSITIVE DEPENDENCY
   path: 1.4.2 # TRANSITIVE DEPENDENCY
   petitparser: 1.6.1 # TRANSITIVE DEPENDENCY
-  plugin: 0.2.0+1 # TRANSITIVE DEPENDENCY
-  pool: 1.3.2 # TRANSITIVE DEPENDENCY
-  pub_semver: 1.3.2 # TRANSITIVE DEPENDENCY
-  quiver: 0.24.0 # TRANSITIVE DEPENDENCY
-  shelf: 0.7.0 # TRANSITIVE DEPENDENCY
-  shelf_packages_handler: 1.0.3 # TRANSITIVE DEPENDENCY
-  shelf_static: 0.2.5 # TRANSITIVE DEPENDENCY
-  shelf_web_socket: 0.2.1 # TRANSITIVE DEPENDENCY
-  source_map_stack_trace: 1.1.4 # TRANSITIVE DEPENDENCY
-  source_maps: 0.10.4 # TRANSITIVE DEPENDENCY
+  plugin: 0.2.0+2 # TRANSITIVE DEPENDENCY
+  pool: 1.3.3 # TRANSITIVE DEPENDENCY
   source_span: 1.4.0 # TRANSITIVE DEPENDENCY
   stack_trace: 1.8.2 # TRANSITIVE DEPENDENCY
-  stream_channel: 1.6.1 # TRANSITIVE DEPENDENCY
-  term_glyph: 1.0.0 # TRANSITIVE DEPENDENCY
-  test: 0.12.24+2 # TRANSITIVE DEPENDENCY
   typed_data: 1.1.4 # TRANSITIVE DEPENDENCY
   utf: 0.9.0+3 # TRANSITIVE DEPENDENCY
   vector_math: 2.0.5 # TRANSITIVE DEPENDENCY
-  vm_service_client: 0.2.2+4 # TRANSITIVE DEPENDENCY
   watcher: 0.9.7+4 # TRANSITIVE DEPENDENCY
-  web_socket_channel: 1.0.5 # TRANSITIVE DEPENDENCY
-  yaml: 2.1.12 # TRANSITIVE DEPENDENCY
+  yaml: 2.1.13 # TRANSITIVE DEPENDENCY
 
 flutter:
   uses-material-design: true