Refactor Isolate name format, storage and log

runtime/observatory/tests/service/dev_fs_spawn_test.dart

Index: runtime/observatory/tests/service/dev_fs_spawn_test.dart
diff --git a/runtime/observatory/tests/service/dev_fs_spawn_test.dart b/runtime/observatory/tests/service/dev_fs_spawn_test.dart
index 10b23b01d03b1c2b81f1ce6ec79c562f2690dd68..662529747c219b6e22214ffc3541f471512d8439 100644
--- a/runtime/observatory/tests/service/dev_fs_spawn_test.dart
+++ b/runtime/observatory/tests/service/dev_fs_spawn_test.dart
@@ -119,7 +119,7 @@ main(args, msg) {
       if (event.kind == ServiceEvent.kIsolateSpawn) {
         expect(event.spawnToken, equals('mySpawnToken0'));
         expect(event.isolate, isNotNull);
-        expect(event.isolate.name, equals('devfs_file0.dart\$main'));
+        expect(event.isolate.name, equals('devfs_file0.dart:main()'));
         completer.complete(event.isolate);
         sub.cancel();
       }
@@ -147,7 +147,7 @@ main(args, msg) {
       if (event.kind == ServiceEvent.kIsolateSpawn) {
         expect(event.spawnToken, equals('mySpawnToken1'));
         expect(event.isolate, isNotNull);
-        expect(event.isolate.name, equals('devfs_file1.dart\$main'));
+        expect(event.isolate.name, equals('devfs_file1.dart:main()'));
         completer.complete(event.isolate);
         sub.cancel();
       }
@@ -176,7 +176,7 @@ main(args, msg) {
       if (event.kind == ServiceEvent.kIsolateSpawn) {
         expect(event.spawnToken, equals('mySpawnToken2'));
         expect(event.isolate, isNotNull);
-        expect(event.isolate.name, equals('devfs_file2.dart\$main'));
+        expect(event.isolate.name, equals('devfs_file2.dart\:main()'));

[rmacnak, 2017/08/24 19:00:19]

The colon doesn't need to be escaped.

[cbernaschina, 2017/08/24 20:19:33]

Done.

         completer.complete(event.isolate);
         sub.cancel();
       }