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

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

Index: sdk/lib/_internal/pub_generated/lib/src/git.dart
diff --git a/sdk/lib/_internal/pub/lib/src/git.dart b/sdk/lib/_internal/pub_generated/lib/src/git.dart
similarity index 82%
copy from sdk/lib/_internal/pub/lib/src/git.dart
copy to sdk/lib/_internal/pub_generated/lib/src/git.dart
index 53d69d89f3d6012776888d85db5beea3a0148a17..a574e8a6865e7814c2ef024dc1b502106a2b0dfa 100644
--- a/sdk/lib/_internal/pub/lib/src/git.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/git.dart
@@ -43,15 +43,18 @@ bool _isInstalledCache;
 ///
 /// Returns the stdout as a list of strings if it succeeded. Completes to an
 /// exception if it failed.
-Future<List<String>> run(List<String> args,
-    {String workingDir, Map<String, String> environment}) {
+Future<List<String>> run(List<String> args, {String workingDir, Map<String,
+    String> environment}) {
   if (!isInstalled) {
-    fail("Cannot find a Git executable.\n"
-        "Please ensure Git is correctly installed.");
+    fail(
+        "Cannot find a Git executable.\n" "Please ensure Git is correctly installed.");
   }
 
   log.muteProgress();
-  return runProcess(_gitCommand, args, workingDir: workingDir,
+  return runProcess(
+      _gitCommand,
+      args,
+      workingDir: workingDir,
       environment: environment).then((result) {
     if (!result.success) throw new GitException(args, result.stderr.join("\n"));
 
@@ -62,14 +65,16 @@ Future<List<String>> run(List<String> args,
 }
 
 /// Like [run], but synchronous.
-List<String> runSync(List<String> args, {String workingDir,
-    Map<String, String> environment}) {
+List<String> runSync(List<String> args, {String workingDir, Map<String,
+    String> environment}) {
   if (!isInstalled) {
-    fail("Cannot find a Git executable.\n"
-        "Please ensure Git is correctly installed.");
+    fail(
+        "Cannot find a Git executable.\n" "Please ensure Git is correctly installed.");
   }
 
-  var result = runProcessSync(_gitCommand, args,
+  var result = runProcessSync(
+      _gitCommand,
+      args,
       workingDir: workingDir,
       environment: environment);
   if (!result.success) throw new GitException(args, result.stderr.join("\n"));
@@ -84,7 +89,7 @@ String get _gitCommand {
   var command;
   if (_tryGitCommand("git")) {
     _commandCache = "git";
-  } else if (_tryGitCommand("git.cmd")){
+  } else if (_tryGitCommand("git.cmd")) {
     _commandCache = "git.cmd";
   } else {
     return null;