Update Webdev to 2.7.8 (#1498)

Author: elliette

webdev/CHANGELOG.md

@@ -3,6 +3,7 @@
 - Update `vm_service` to `^8.1.0`.
 - Enable expression evaluation by default.
 - Update the Dart minimum SDK to `>=2.16.0`.
+- Depend on the latest DWDS (12.0.0)
 
 ## 2.7.7
 

webdev/lib/src/version.dart

@@ -1,6 +1,6 @@
 name: webdev
 # Every time this changes you need to run `dart run build_runner build`.
-version: 2.7.8-dev
+version: 2.7.8
 # We should not depend on a dev SDK before publishing.
 # publish_to: none
 homepage: https://github.com/dart-lang/webdev
@@ -18,7 +18,7 @@ dependencies:
   browser_launcher: ^1.0.0
   crypto: ^3.0.0
   dds: ^2.2.0
-  dwds: ^11.5.1
+  dwds: ^12.0.0
   http: ^0.13.0
   http_multi_server: ^3.0.0
   io: ^1.0.0
@@ -48,9 +48,9 @@ dev_dependencies:
   webdriver: ^3.0.0
 
 # Uncomment for development versions
-dependency_overrides:
-  dwds:
-    path: ../dwds
+# dependency_overrides:
+#   dwds:
+#     path: ../dwds
 
 executables:
   webdev: