Revamp web socket API.

sdk/lib/_internal/pub/lib/src/barback.dart

Index: sdk/lib/_internal/pub/lib/src/barback.dart
diff --git a/sdk/lib/_internal/pub/lib/src/barback.dart b/sdk/lib/_internal/pub/lib/src/barback.dart
index 5c99bfa06503de7eee9f432512bc5cd978a1c557..1c703566cb96b003d3db6cc0ca2537600658766b 100644
--- a/sdk/lib/_internal/pub/lib/src/barback.dart
+++ b/sdk/lib/_internal/pub/lib/src/barback.dart
@@ -251,66 +251,3 @@ AssetId specialUrlToId(Uri url) {
   var assetPath = path.url.join("lib", path.url.joinAll(parts.skip(index + 2)));
   return new AssetId(package, assetPath);
 }
-
-/// Converts [id] to a "servable path" for that asset.
-///
-/// This is the root relative URL that could be used to request that asset from
-/// pub serve. It's also the relative path that the asset will be output to by
-/// pub build (except this always returns a path using URL separators).
-///
-/// [entrypoint] is the name of the entrypoint package.
-///
-/// Examples (where [entrypoint] is "myapp"):
-///
-///     myapp|web/index.html   -> /index.html
-///     myapp|lib/lib.dart     -> /packages/myapp/lib.dart
-///     foo|lib/foo.dart       -> /packages/foo/foo.dart
-///     foo|asset/foo.png      -> /assets/foo/foo.png
-///     myapp|test/main.dart   -> ERROR
-///     foo|web/
-///
-/// Throws a [FormatException] if [id] is not a valid public asset.
-// TODO(rnystrom): Get rid of [useWebAsRoot] once pub serve also serves out of
-// the package root directory.
-String idtoUrlPath(String entrypoint, AssetId id, {bool useWebAsRoot: true}) {
-  var parts = path.url.split(id.path);
-
-  if (parts.length < 2) {
-    throw new FormatException(
-        "Can not serve assets from top-level directory.");
-  }
-
-  // Map "asset" and "lib" to their shared directories.
-  var dir = parts[0];
-  var rest = parts.skip(1);
-
-  if (dir == "asset") {
-    return path.url.join("/", "assets", id.package, path.url.joinAll(rest));
-  }
-
-  if (dir == "lib") {
-    return path.url.join("/", "packages", id.package, path.url.joinAll(rest));
-  }
-
-  if (useWebAsRoot) {
-    if (dir != "web") {
-      throw new FormatException('Cannot access assets from "$dir".');
-    }
-
-    if (id.package != entrypoint) {
-      throw new FormatException(
-          'Cannot access "web" directory of non-root packages.');
-    }
-
-    return path.url.join("/", path.url.joinAll(rest));
-  }
-
-  if (id.package != entrypoint) {
-    throw new FormatException(
-        'Can only access "lib" and "asset" directories of non-entrypoint '
-    'packages.');
-  }
-
-  // Allow any path in the entrypoint package.
-  return path.url.join("/", path.url.joinAll(parts));
-}