Revert dartdoc documenting exports.

sdk/lib/_internal/dartdoc/bin/dartdoc.dart

Index: sdk/lib/_internal/dartdoc/bin/dartdoc.dart
diff --git a/sdk/lib/_internal/dartdoc/bin/dartdoc.dart b/sdk/lib/_internal/dartdoc/bin/dartdoc.dart
index 0616f0add4a1c1a31fbffb21be7c7e452d046283..ec63c06ccb4a1df099eec7d87041f68e9f5807e3 100644
--- a/sdk/lib/_internal/dartdoc/bin/dartdoc.dart
+++ b/sdk/lib/_internal/dartdoc/bin/dartdoc.dart
@@ -18,11 +18,9 @@ library dartdoc;
 
 import 'dart:async';
 import 'dart:io';
-import 'dart:uri';
 
 // TODO(rnystrom): Use "package:" URL (#4968).
 import '../lib/dartdoc.dart';
-import '../lib/src/dartdoc/utils.dart';
 import 'package:args/args.dart';
 import 'package:pathos/path.dart' as path;
 
@@ -41,7 +39,7 @@ main() {
 
   final Path libPath = scriptDir.append('../../../../');
 
-  String packageRoot;
+  Path packageRoot;
 
   argParser.addFlag('no-code',
       help: 'Do not include source code in the documentation.',
@@ -168,7 +166,7 @@ main() {
         ' the entrypoint.',
       callback: (packageDir) {
         if(packageDir != null) {
-          packageRoot = packageDir;
+          packageRoot = new Path(packageDir);
         }
       });
 
@@ -177,7 +175,7 @@ main() {
       help: 'Deprecated: same as --package-root.',
       callback: (packageDir) {
         if(packageDir != null) {
-          packageRoot = packageDir;
+          packageRoot = new Path(packageDir);
         }
       });
 
@@ -190,22 +188,21 @@ main() {
     exit(1);
   }
 
-  final entrypoints = <Uri>[];
+  final entrypoints = <Path>[];
   try {
     final option = argParser.parse(args);
 
     // This checks to see if the root of all entrypoints is the same.
     // If it is not, then we display a warning, as package imports might fail.
     var entrypointRoot;
-    for (final entrypoint in option.rest) {
-      var uri = Uri.parse(entrypoint);
-      if (uri.scheme == '') uri = pathToFileUri(entrypoint);
-      entrypoints.add(uri);
+    for(final arg in option.rest) {
+      var entrypoint = new Path(arg);
+      entrypoints.add(entrypoint);
 
-      if (uri.scheme != 'file') continue;
       if (entrypointRoot == null) {
-        entrypointRoot = path.dirname(entrypoint);
-      } else if (entrypointRoot != path.dirname(entrypoint)) {
+        entrypointRoot = entrypoint.directoryPath;
+      } else if (entrypointRoot.toNativePath() !=
+          entrypoint.directoryPath.toNativePath()) {
         print('Warning: entrypoints are at different directories. "package:"'
             ' imports may fail.');
       }
@@ -223,7 +220,25 @@ main() {
     exit(1);
   }
 
-  if (packageRoot == null) packageRoot = _getPackageRoot(entrypoints);
+  if (packageRoot == null) {
+    // Check if there's a `packages` directory in the entry point directory.
+    var script = path.normalize(path.absolute(entrypoints[0].toNativePath()));
+    var dir = path.join(path.dirname(script), 'packages/');
+    if (new Directory(dir).existsSync()) {
+      // TODO(amouravski): convert all of dartdoc to use pathos.
+      packageRoot = new Path(dir);
+    } else {
+      // If there is not, then check if the entrypoint is somewhere in a `lib`
+      // directory.
+      dir = path.dirname(script);
+      var parts = path.split(dir);
+      var libDir = parts.lastIndexOf('lib');
+      if (libDir > 0) {
+        packageRoot = new Path(path.join(path.joinAll(parts.take(libDir)),
+              'packages'));
+      }
+    }
+  }
 
   cleanOutputDirectory(dartdoc.outputDir);
 
@@ -252,25 +267,3 @@ main() {
     })
     .whenComplete(() => dartdoc.cleanup());
 }
-
-String _getPackageRoot(List<Uri> entrypoints) {
-  // Check if there's a `packages` directory in the entry point directory.
-  var fileEntrypoint = entrypoints.firstWhere(
-      (entrypoint) => entrypoint.scheme == 'file',
-      orElse: () => null);
-  if (fileEntrypoint == null) return;
-
-  var script = path.normalize(path.absolute(fileUriToPath(fileEntrypoint)));
-  var dir = path.join(path.dirname(script), 'packages/');
-  if (new Directory(dir).existsSync()) return dir;
-
-  // If there is not, then check if the entrypoint is somewhere in a `lib`
-  // directory.
-  var parts = path.split(path.dirname(script));
-  var libDir = parts.lastIndexOf('lib');
-  if (libDir > 0) {
-    return path.join(path.joinAll(parts.take(libDir)), 'packages');
-  } else {
-    return null;
-  }
-}