Run dartfmt on all files under runtime.

runtime/observatory/tests/service/dev_fs_uri_test.dart

Index: runtime/observatory/tests/service/dev_fs_uri_test.dart
diff --git a/runtime/observatory/tests/service/dev_fs_uri_test.dart b/runtime/observatory/tests/service/dev_fs_uri_test.dart
index f8ae29c8f0067adfd79d23771394e0f3ef74ae67..3094284fc7cbe6c12ceb67d977b182e7151b049a 100644
--- a/runtime/observatory/tests/service/dev_fs_uri_test.dart
+++ b/runtime/observatory/tests/service/dev_fs_uri_test.dart
@@ -19,7 +19,6 @@ Future<String> readResponse(HttpClientResponse response) {
   return completer.future;
 }
 
-
 var tests = [
   // Write a file with the ? character in the filename.
   (VM vm) async {
@@ -36,7 +35,7 @@ var tests = [
 
     var result;
     // Create DevFS.
-    result = await vm.invokeRpcNoUpgrade('_createDevFS', { 'fsName': fsId });
+    result = await vm.invokeRpcNoUpgrade('_createDevFS', {'fsName': fsId});
     expect(result['type'], equals('FileSystem'));
     expect(result['name'], equals(fsId));
     expect(result['uri'], new isInstanceOf<String>());
@@ -68,8 +67,7 @@ var tests = [
 
     // Write the file again but this time with the true file contents.
     client = new HttpClient();
-    request =
-        await client.putUrl(Uri.parse(serviceHttpAddress));
+    request = await client.putUrl(Uri.parse(serviceHttpAddress));
     request.headers.add('dev_fs_name', fsId);
     request.headers.add('dev_fs_uri_b64', fileUriBase64);
     request.add(GZIP.encode(fileContents));
@@ -83,8 +81,8 @@ var tests = [
 
     // Read the file back.
     result = await vm.invokeRpcNoUpgrade('_readDevFSFile', {
-        'fsName': fsId,
-        'uri': fileUri.toString(),
+      'fsName': fsId,
+      'uri': fileUri.toString(),
     });
     expect(result['type'], equals('FSFile'));
     expect(result['fileContents'], equals(fileContentsBase64));
@@ -98,15 +96,15 @@ var tests = [
 
     // Read the second file back.
     result = await vm.invokeRpcNoUpgrade('_readDevFSFile', {
-        'fsName': fsId,
-        'uri': fileUri2.toString(),
+      'fsName': fsId,
+      'uri': fileUri2.toString(),
     });
     expect(result['type'], equals('FSFile'));
     expect(result['fileContents'], equals(fileContentsBase64));
 
     // Delete DevFS.
     result = await vm.invokeRpcNoUpgrade('_deleteDevFS', {
-        'fsName': fsId,
+      'fsName': fsId,
     });
     expect(result['type'], equals('Success'));
   },