diff --git a/packages/flutter_tools/gradle/flutter.gradle b/packages/flutter_tools/gradle/flutter.gradle
index 79326de9719..34161320b87 100644
--- a/packages/flutter_tools/gradle/flutter.gradle
+++ b/packages/flutter_tools/gradle/flutter.gradle
@@ -260,14 +260,6 @@ class FlutterPlugin implements Plugin<Project> {
         if (project.hasProperty('preview-dart-2')) {
             previewDart2Value = project.property('preview-dart-2')
         }
-        String[] fileSystemRootsValue = null
-        if (project.hasProperty('filesystem-roots')) {
-            fileSystemRootsValue = project.property('filesystem-roots').split('\\|')
-        }
-        String fileSystemSchemeValue = null
-        if (project.hasProperty('filesystem-scheme')) {
-            fileSystemSchemeValue = project.property('filesystem-scheme')
-        }
         Boolean trackWidgetCreationValue = false
         if (project.hasProperty('track-widget-creation')) {
             trackWidgetCreationValue = project.property('track-widget-creation')
@@ -310,8 +302,6 @@ class FlutterPlugin implements Plugin<Project> {
                 localEngineSrcPath this.localEngineSrcPath
                 targetPath target
                 previewDart2 previewDart2Value
-                fileSystemRoots fileSystemRootsValue
-                fileSystemScheme fileSystemSchemeValue
                 trackWidgetCreation trackWidgetCreationValue
                 preferSharedLibrary preferSharedLibraryValue
                 targetPlatform targetPlatformValue
@@ -330,8 +320,6 @@ class FlutterPlugin implements Plugin<Project> {
                 localEngineSrcPath this.localEngineSrcPath
                 targetPath target
                 previewDart2 previewDart2Value
-                fileSystemRoots fileSystemRootsValue
-                fileSystemScheme fileSystemSchemeValue
                 trackWidgetCreation trackWidgetCreationValue
                 preferSharedLibrary preferSharedLibraryValue
                 targetPlatform targetPlatformValue
@@ -369,10 +357,6 @@ abstract class BaseFlutterTask extends DefaultTask {
     @Optional @Input
     Boolean previewDart2
     @Optional @Input
-    String[] fileSystemRoots
-    @Optional @Input
-    String fileSystemScheme
-    @Optional @Input
     Boolean trackWidgetCreation
     @Optional @Input
     Boolean preferSharedLibrary
@@ -417,8 +401,8 @@ abstract class BaseFlutterTask extends DefaultTask {
                 if (previewDart2) {
                     args "--preview-dart-2"
                 } else {
-                    args "--no-preview-dart-2"
-                }
+		    args "--no-preview-dart-2"
+		}
                 if (trackWidgetCreation) {
                     args "--track-widget-creation"
                 }
@@ -452,15 +436,7 @@ abstract class BaseFlutterTask extends DefaultTask {
                 args "--preview-dart-2"
             } else {
                 args "--no-preview-dart-2"
-            }
-            if (fileSystemRoots != null) {
-                for (root in fileSystemRoots) {
-                    args "--filesystem-root", root
-                }
-            }
-            if (fileSystemScheme != null) {
-                args "--filesystem-scheme", fileSystemScheme
-            }
+	    }
             if (trackWidgetCreation) {
                 args "--track-widget-creation"
             }
diff --git a/packages/flutter_tools/lib/src/android/gradle.dart b/packages/flutter_tools/lib/src/android/gradle.dart
index 95ee4de193f..4d2d883d34c 100644
--- a/packages/flutter_tools/lib/src/android/gradle.dart
+++ b/packages/flutter_tools/lib/src/android/gradle.dart
@@ -303,10 +303,6 @@ Future<Null> _buildGradleProjectV2(String gradle, BuildInfo buildInfo, String ta
       command.add('-Pextra-front-end-options=${buildInfo.extraFrontEndOptions}');
     if (buildInfo.extraGenSnapshotOptions != null)
       command.add('-Pextra-gen-snapshot-options=${buildInfo.extraGenSnapshotOptions}');
-    if (buildInfo.fileSystemRoots != null)
-      command.add('-Pfilesystem-roots=${buildInfo.fileSystemRoots.join('|')}');
-    if (buildInfo.fileSystemScheme != null)
-      command.add('-Pfilesystem-scheme=${buildInfo.fileSystemScheme}');
   }
   if (buildInfo.preferSharedLibrary && androidSdk.ndkCompiler != null) {
     command.add('-Pprefer-shared-library=true');
diff --git a/packages/flutter_tools/lib/src/build_info.dart b/packages/flutter_tools/lib/src/build_info.dart
index 2f9cabf891e..c86d5b73bd4 100644
--- a/packages/flutter_tools/lib/src/build_info.dart
+++ b/packages/flutter_tools/lib/src/build_info.dart
@@ -17,8 +17,6 @@ class BuildInfo {
     this.extraGenSnapshotOptions,
     this.preferSharedLibrary,
     this.targetPlatform,
-    this.fileSystemRoots,
-    this.fileSystemScheme,
   });
 
   final BuildMode mode;
@@ -34,9 +32,6 @@ class BuildInfo {
   /// Whether build should be done using Dart2 Frontend parser.
   final bool previewDart2;
 
-  final List<String> fileSystemRoots;
-  final String fileSystemScheme;
-
   /// Whether the build should track widget creation locations.
   final bool trackWidgetCreation;
 
diff --git a/packages/flutter_tools/lib/src/commands/build_flx.dart b/packages/flutter_tools/lib/src/commands/build_flx.dart
index 8a849cae926..c763369cadd 100644
--- a/packages/flutter_tools/lib/src/commands/build_flx.dart
+++ b/packages/flutter_tools/lib/src/commands/build_flx.dart
@@ -35,18 +35,7 @@ class BuildFlxCommand extends BuildSubCommand {
       ..addFlag('report-licensed-packages',
         help: 'Whether to report the names of all the packages that are included '
               'in the application\'s LICENSE file.',
-        defaultsTo: false)
-      ..addMultiOption('filesystem-root',
-        hide: !verboseHelp,
-        help: 'Specify the path, that is used as root in a virtual file system\n'
-            'for compilation. Input file name should be specified as Uri in\n'
-            'filesystem-scheme scheme. Use only in Dart 2 mode.\n'
-            'Requires --output-dill option to be explicitly specified.\n')
-      ..addOption('filesystem-scheme',
-        defaultsTo: 'org-dartlang-root',
-        hide: !verboseHelp,
-        help: 'Specify the scheme that is used for virtual file system used in\n'
-            'compilation. See more details on filesystem-root option.\n');
+        defaultsTo: false);
     usesPubOption();
   }
 
@@ -78,8 +67,6 @@ class BuildFlxCommand extends BuildSubCommand {
       precompiledSnapshot: argResults['precompiled'],
       reportLicensedPackages: argResults['report-licensed-packages'],
       trackWidgetCreation: argResults['track-widget-creation'],
-      fileSystemScheme: argResults['filesystem-scheme'],
-      fileSystemRoots: argResults['filesystem-root'],
     );
   }
 }
diff --git a/packages/flutter_tools/lib/src/commands/run.dart b/packages/flutter_tools/lib/src/commands/run.dart
index cb817a4dc81..f4eebbdec11 100644
--- a/packages/flutter_tools/lib/src/commands/run.dart
+++ b/packages/flutter_tools/lib/src/commands/run.dart
@@ -172,18 +172,7 @@ class RunCommand extends RunCommandBase {
         help: 'Specify the path to frontend server output kernel file.',
       )
       ..addOption(FlutterOptions.kExtraFrontEndOptions, hide: true)
-      ..addOption(FlutterOptions.kExtraGenSnapshotOptions, hide: true)
-      ..addMultiOption('filesystem-root',
-        hide: !verboseHelp,
-        help: 'Specify the path, that is used as root in a virtual file system\n'
-            'for compilation. Input file name should be specified as Uri in\n'
-            'filesystem-scheme scheme. Use only in Dart 2 mode.\n'
-            'Requires --output-dill option to be explicitly specified.\n')
-      ..addOption('filesystem-scheme',
-        defaultsTo: 'org-dartlang-root',
-        hide: !verboseHelp,
-        help: 'Specify the scheme that is used for virtual file system used in\n'
-            'compilation. See more details on filesystem-root option.\n');
+      ..addOption(FlutterOptions.kExtraGenSnapshotOptions, hide: true);
   }
 
   List<Device> devices;
@@ -356,8 +345,6 @@ class RunCommand extends RunCommandBase {
         previewDart2: argResults['preview-dart-2'],
         trackWidgetCreation: argResults['track-widget-creation'],
         dillOutputPath: argResults['output-dill'],
-        fileSystemRoots: argResults['filesystem-root'],
-        fileSystemScheme: argResults['filesystem-scheme'],
       );
     }).toList();
 
diff --git a/packages/flutter_tools/lib/src/compile.dart b/packages/flutter_tools/lib/src/compile.dart
index be6623441b7..7c15e91f682 100644
--- a/packages/flutter_tools/lib/src/compile.dart
+++ b/packages/flutter_tools/lib/src/compile.dart
@@ -55,9 +55,7 @@ Future<String> compile(
     bool trackWidgetCreation: false,
     List<String> extraFrontEndOptions,
     String incrementalCompilerByteStorePath,
-    String packagesPath,
-    List<String> fileSystemRoots,
-    String fileSystemScheme}) async {
+    String packagesPath}) async {
   final String frontendServer = artifacts.getArtifactPath(
     Artifact.frontendServerSnapshotForEngineDartSdk
   );
@@ -95,17 +93,9 @@ Future<String> compile(
   if (outputFilePath != null) {
     command.addAll(<String>['--output-dill', outputFilePath]);
   }
-  if (depFilePath != null && (fileSystemRoots == null || fileSystemRoots.isEmpty)) {
+  if (depFilePath != null) {
     command.addAll(<String>['--depfile', depFilePath]);
   }
-  if (fileSystemRoots != null) {
-    for (String root in fileSystemRoots) {
-      command.addAll(<String>['--filesystem-root', root]);
-    }
-  }
-  if (fileSystemScheme != null) {
-    command.addAll(<String>['--filesystem-scheme', fileSystemScheme]);
-  }
 
   if (extraFrontEndOptions != null)
     command.addAll(extraFrontEndOptions);
@@ -137,13 +127,10 @@ Future<String> compile(
 /// restarts the Flutter app.
 class ResidentCompiler {
   ResidentCompiler(this._sdkRoot, {bool trackWidgetCreation: false,
-      String packagesPath, List<String> fileSystemRoots, String fileSystemScheme ,
-      CompilerMessageConsumer compilerMessageConsumer: printError})
+      String packagesPath, CompilerMessageConsumer compilerMessageConsumer: printError})
     : assert(_sdkRoot != null),
       _trackWidgetCreation = trackWidgetCreation,
       _packagesPath = packagesPath,
-      _fileSystemRoots = fileSystemRoots,
-      _fileSystemScheme = fileSystemScheme,
       stdoutHandler = new _StdoutHandler(consumer: compilerMessageConsumer) {
     // This is a URI, not a file path, so the forward slash is correct even on Windows.
     if (!_sdkRoot.endsWith('/'))
@@ -152,8 +139,6 @@ class ResidentCompiler {
 
   final bool _trackWidgetCreation;
   final String _packagesPath;
-  final List<String> _fileSystemRoots;
-  final String _fileSystemScheme;
   String _sdkRoot;
   Process _server;
   final _StdoutHandler stdoutHandler;
@@ -172,13 +157,11 @@ class ResidentCompiler {
     // First time recompile is called we actually have to compile the app from
     // scratch ignoring list of invalidated files.
     if (_server == null)
-      return _compile(_mapFilename(mainPath), outputPath, _mapFilename(packagesFilePath));
+      return _compile(mainPath, outputPath, packagesFilePath);
 
     final String inputKey = new Uuid().generateV4();
-    _server.stdin.writeln('recompile ${mainPath != null ? _mapFilename(mainPath) + " ": ""}$inputKey');
-    for (String filePath in invalidatedFiles) {
-      _server.stdin.writeln(_mapFilename(filePath));
-    }
+    _server.stdin.writeln('recompile ${mainPath != null ? mainPath + " ": ""}$inputKey');
+    invalidatedFiles.forEach(_server.stdin.writeln);
     _server.stdin.writeln(inputKey);
 
     return stdoutHandler.outputFilename.future;
@@ -209,14 +192,6 @@ class ResidentCompiler {
     if (_packagesPath != null) {
       args.addAll(<String>['--packages', _packagesPath]);
     }
-    if (_fileSystemRoots != null) {
-      for (String root in _fileSystemRoots) {
-        args.addAll(<String>['--filesystem-root', root]);
-      }
-    }
-    if (_fileSystemScheme != null) {
-      args.addAll(<String>['--filesystem-scheme', _fileSystemScheme]);
-    }
     _server = await processManager.start(args);
     _server.stdout
       .transform(utf8.decoder)
@@ -263,19 +238,6 @@ class ResidentCompiler {
     _server.stdin.writeln('reset');
   }
 
-  String _mapFilename(String filename) {
-    if (_fileSystemRoots != null) {
-      for (String root in _fileSystemRoots) {
-        if (filename.startsWith(root)) {
-          return new Uri(
-              scheme: _fileSystemScheme, path: filename.substring(root.length))
-              .toString();
-        }
-      }
-    }
-    return filename;
-  }
-
   Future<dynamic> shutdown() {
     _server.kill();
     return _server.exitCode;
diff --git a/packages/flutter_tools/lib/src/devfs.dart b/packages/flutter_tools/lib/src/devfs.dart
index 40446d17177..4af38acc05b 100644
--- a/packages/flutter_tools/lib/src/devfs.dart
+++ b/packages/flutter_tools/lib/src/devfs.dart
@@ -487,7 +487,7 @@ class DevFS {
           final DevFSContent content = dirtyEntries[uri];
           if (content is DevFSFileContent) {
             filesUris.add(uri);
-            invalidatedFiles.add(content.file.path);
+            invalidatedFiles.add(content.file.uri.toString());
             numBytes -= content.size;
           }
         }
diff --git a/packages/flutter_tools/lib/src/flx.dart b/packages/flutter_tools/lib/src/flx.dart
index f02ad9a4ab2..b7b8236e88c 100644
--- a/packages/flutter_tools/lib/src/flx.dart
+++ b/packages/flutter_tools/lib/src/flx.dart
@@ -44,8 +44,6 @@ Future<Null> build({
   bool precompiledSnapshot: false,
   bool reportLicensedPackages: false,
   bool trackWidgetCreation: false,
-  List<String> fileSystemRoots,
-  String fileSystemScheme,
 }) async {
   outputPath ??= defaultFlxOutputPath;
   snapshotPath ??= defaultSnapshotPath;
@@ -84,9 +82,6 @@ Future<Null> build({
       outputFilePath: applicationKernelFilePath,
       depFilePath: depfilePath,
       trackWidgetCreation: trackWidgetCreation,
-      fileSystemRoots: fileSystemRoots,
-      fileSystemScheme: fileSystemScheme,
-      packagesPath: packagesPath,
     );
     if (kernelBinaryFilename == null) {
       throwToolExit('Compiler terminated unexpectedly on $mainPath');
diff --git a/packages/flutter_tools/lib/src/resident_runner.dart b/packages/flutter_tools/lib/src/resident_runner.dart
index 835fe227611..3abc1525ad4 100644
--- a/packages/flutter_tools/lib/src/resident_runner.dart
+++ b/packages/flutter_tools/lib/src/resident_runner.dart
@@ -36,8 +36,6 @@ class FlutterDevice {
   ApplicationPackage package;
   ResidentCompiler generator;
   String dillOutputPath;
-  List<String> fileSystemRoots;
-  String fileSystemScheme;
 
   StreamSubscription<String> _loggingSubscription;
 
@@ -45,14 +43,11 @@ class FlutterDevice {
     @required bool previewDart2,
     @required bool trackWidgetCreation,
     this.dillOutputPath,
-    this.fileSystemRoots,
-    this.fileSystemScheme,
   }) {
     if (previewDart2) {
       generator = new ResidentCompiler(
         artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath),
         trackWidgetCreation: trackWidgetCreation,
-        fileSystemRoots: fileSystemRoots, fileSystemScheme: fileSystemScheme
       );
     }
   }
diff --git a/packages/flutter_tools/lib/src/run_hot.dart b/packages/flutter_tools/lib/src/run_hot.dart
index a84708c8b5e..db0e1193ac8 100644
--- a/packages/flutter_tools/lib/src/run_hot.dart
+++ b/packages/flutter_tools/lib/src/run_hot.dart
@@ -392,7 +392,7 @@ class HotRunner extends ResidentRunner {
     // We are now running from source.
     _runningFromSnapshot = false;
     final String launchPath = debuggingOptions.buildInfo.previewDart2
-        ? mainPath + '.dill'
+        ? dillOutputPath ?? mainPath + '.dill'
         : mainPath;
     await _launchFromDevFS(launchPath);
     restartTimer.stop();
diff --git a/packages/flutter_tools/lib/src/runner/flutter_command.dart b/packages/flutter_tools/lib/src/runner/flutter_command.dart
index c65e9a7ac00..cd50e616d29 100644
--- a/packages/flutter_tools/lib/src/runner/flutter_command.dart
+++ b/packages/flutter_tools/lib/src/runner/flutter_command.dart
@@ -61,8 +61,6 @@ class FlutterCommandResult {
 class FlutterOptions {
   static const String kExtraFrontEndOptions = 'extra-front-end-options';
   static const String kExtraGenSnapshotOptions = 'extra-gen-snapshot-options';
-  static const String kFileSystemRoot = 'filesystem-root';
-  static const String kFileSystemScheme = 'filesystem-scheme';
 }
 
 abstract class FlutterCommand extends Command<Null> {
@@ -196,12 +194,7 @@ abstract class FlutterCommand extends Command<Null> {
       preferSharedLibrary: argParser.options.containsKey('prefer-shared-library')
         ? argResults['prefer-shared-library']
         : false,
-      targetPlatform: targetPlatform,
-      fileSystemRoots: argParser.options.containsKey(FlutterOptions.kFileSystemRoot)
-          ? argResults[FlutterOptions.kFileSystemRoot] : null,
-      fileSystemScheme: argParser.options.containsKey(FlutterOptions.kFileSystemScheme)
-          ? argResults[FlutterOptions.kFileSystemScheme] : null,
-    );
+      targetPlatform: targetPlatform);
   }
 
   void setupApplicationPackages() {
diff --git a/packages/flutter_tools/test/compile_test.dart b/packages/flutter_tools/test/compile_test.dart
index 3eb6c4d19bf..45e0bb9e676 100644
--- a/packages/flutter_tools/test/compile_test.dart
+++ b/packages/flutter_tools/test/compile_test.dart
@@ -227,7 +227,7 @@ Future<Null> _recompile(StreamController<List<int>> streamController,
   final String output = await generator.recompile(null /* mainPath */, <String>['/path/to/main.dart']);
   expect(output, equals('/path/to/main.dart.dill'));
   final String commands = mockFrontendServerStdIn.getAndClear();
-  final RegExp re = new RegExp('^recompile (.*)\\n/path/to/main.dart\\n(.*)\\n\$');
+  final RegExp re = new RegExp(r'^recompile (.*)\n/path/to/main.dart\n(.*)\n$');
   expect(commands, matches(re));
   final Match match = re.firstMatch(commands);
   expect(match[1] == match[2], isTrue);