Revert "Use native async/await support in pub."

sdk/lib/_internal/pub_generated/lib/src/package.dart

Index: sdk/lib/_internal/pub_generated/lib/src/package.dart
diff --git a/sdk/lib/_internal/pub/lib/src/package.dart b/sdk/lib/_internal/pub_generated/lib/src/package.dart
similarity index 91%
copy from sdk/lib/_internal/pub/lib/src/package.dart
copy to sdk/lib/_internal/pub_generated/lib/src/package.dart
index d59a0945fff1622cb040359f6dd40c7b423f27c1..e454d4b0b558373d6caff54a14865502bb16af09 100644
--- a/sdk/lib/_internal/pub/lib/src/package.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/package.dart
@@ -80,11 +80,14 @@ class Package {
   /// Returns a list of asset ids for all Dart executables in this package's bin
   /// directory.
   List<AssetId> get executableIds {
-    return ordered(listFiles(beneath: "bin", recursive: false))
-        .where((executable) => p.extension(executable) == '.dart')
-        .map((executable) {
+    return ordered(
+        listFiles(
+            beneath: "bin",
+            recursive: false)).where(
+                (executable) => p.extension(executable) == '.dart').map((executable) {
       return new AssetId(
-          name, p.toUri(p.relative(executable, from: dir)).toString());
+          name,
+          p.toUri(p.relative(executable, from: dir)).toString());
     }).toList();
   }
 
@@ -95,8 +98,9 @@ class Package {
   /// pub.dartlang.org for choosing the primary one: the README with the fewest
   /// extensions that is lexically ordered first is chosen.
   String get readmePath {
-    var readmes = listFiles(recursive: false).map(p.basename).
-        where((entry) => entry.contains(_README_REGEXP));
+    var readmes = listFiles(
+        recursive: false).map(
+            p.basename).where((entry) => entry.contains(_README_REGEXP));
     if (readmes.isEmpty) return null;
 
     return p.join(dir, readmes.reduce((readme1, readme2) {
@@ -121,7 +125,7 @@ class Package {
   ///
   /// The package will have no directory associated with it.
   Package.inMemory(this.pubspec)
-    : dir = null;
+      : dir = null;
 
   /// Creates a package with [pubspec] located at [dir].
   Package(this.pubspec, this.dir);
@@ -133,10 +137,10 @@ class Package {
   /// [dir]. For example, a [CachedPackage]'s `lib` directory is in the
   /// `.pub/deps` directory.
   String path(String part1, [String part2, String part3, String part4,
-            String part5, String part6, String part7]) {
+      String part5, String part6, String part7]) {
     if (dir == null) {
-      throw new StateError("Package $name is in-memory and doesn't have paths "
-          "on disk.");
+      throw new StateError(
+          "Package $name is in-memory and doesn't have paths " "on disk.");
     }
     return p.join(dir, part1, part2, part3, part4, part5, part6, part7);
   }
@@ -145,8 +149,8 @@ class Package {
   /// [path] or [listFiles]), returns it relative to the package root.
   String relative(String path) {
     if (dir == null) {
-      throw new StateError("Package $name is in-memory and doesn't have paths "
-          "on disk.");
+      throw new StateError(
+          "Package $name is in-memory and doesn't have paths " "on disk.");
     }
     return p.relative(path, from: dir);
   }
@@ -212,8 +216,7 @@ class Package {
       // List all files that aren't gitignored, including those not checked in
       // to Git.
       files = git.runSync(
-          ["ls-files", "--cached", "--others", "--exclude-standard",
-           relativeBeneath],
+          ["ls-files", "--cached", "--others", "--exclude-standard", relativeBeneath],
           workingDir: dir);
 
       // If we're not listing recursively, strip out paths that contain
@@ -222,8 +225,8 @@ class Package {
       if (!recursive) {
         // If we're listing a subdirectory, we only want to look for slashes
         // after the subdirectory prefix.
-        var relativeStart = relativeBeneath == '.' ? 0 :
-            relativeBeneath.length + 1;
+        var relativeStart =
+            relativeBeneath == '.' ? 0 : relativeBeneath.length + 1;
         files = files.where((file) => !file.contains('/', relativeStart));
       }
 
@@ -238,7 +241,10 @@ class Package {
         return fileExists(file);
       });
     } else {
-      files = listDir(beneath, recursive: recursive, includeDirs: false,
+      files = listDir(
+          beneath,
+          recursive: recursive,
+          includeDirs: false,
           whitelist: _WHITELISTED_FILES);
     }
 
@@ -303,11 +309,11 @@ class _PackageName {
 
   /// Returns a [PackageId] for this package with the given concrete version.
   PackageId atVersion(Version version) =>
-    new PackageId(name, source, version, description);
+      new PackageId(name, source, version, description);
 
   /// Returns a [PackageDep] for this package with the given version constraint.
   PackageDep withConstraint(VersionConstraint constraint) =>
-    new PackageDep(name, source, constraint, description);
+      new PackageDep(name, source, constraint, description);
 }
 
 /// A reference to a [Package], but not any particular version(s) of it.
@@ -320,9 +326,7 @@ class PackageRef extends _PackageName {
   bool operator ==(other) {
     // TODO(rnystrom): We're assuming here that we don't need to delve into the
     // description.
-    return other is PackageRef &&
-           other.name == name &&
-           other.source == source;
+    return other is PackageRef && other.name == name && other.source == source;
   }
 }
 
@@ -352,9 +356,9 @@ class PackageId extends _PackageName {
     // TODO(rnystrom): We're assuming here that we don't need to delve into the
     // description.
     return other is PackageId &&
-           other.name == name &&
-           other.source == source &&
-           other.version == version;
+        other.name == name &&
+        other.source == source &&
+        other.version == version;
   }
 
   String toString() {
@@ -382,8 +386,8 @@ class PackageDep extends _PackageName {
     // TODO(rnystrom): We're assuming here that we don't need to delve into the
     // description.
     return other is PackageDep &&
-           other.name == name &&
-           other.source == source &&
-           other.constraint == constraint;
+        other.name == name &&
+        other.source == source &&
+        other.constraint == constraint;
   }
 }