Fix dart/tools directory to remove @'raw string' and foo.dynamic.

tools/testing/dart/test_suite.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 932 matching lines @@
    *   of what is rendered in the page at that moment. This snapshot is
    *   represented either in text form, if the expectation ends in .txt, or as
    *   an image, if the expectation ends in .png. 'test.dart' will compare the
    *   snapshot to the expectation file. When tests fail, 'test.dart' saves the
    *   new snapshot into a file so it can be visualized or copied over.
    *   Expectations can be recorded for the first time by creating an empty file
    *   with the right name (touch test_name_test.png), running the test, and
    *   executing the copy command printed by the test script.
    */
   Map readOptionsFromFile(Path filePath) {
-    RegExp testOptionsRegExp = const RegExp(@"// VMOptions=(.*)");
-    RegExp dartOptionsRegExp = const RegExp(@"// DartOptions=(.*)");
-    RegExp otherScriptsRegExp = const RegExp(@"// OtherScripts=(.*)");
-    RegExp multiTestRegExp = const RegExp(@"/// [0-9][0-9]:(.*)");
+    RegExp testOptionsRegExp = const RegExp(r"// VMOptions=(.*)");
+    RegExp dartOptionsRegExp = const RegExp(r"// DartOptions=(.*)");
+    RegExp otherScriptsRegExp = const RegExp(r"// OtherScripts=(.*)");
+    RegExp multiTestRegExp = const RegExp(r"/// [0-9][0-9]:(.*)");
     RegExp staticTypeRegExp =
-        const RegExp(@"/// ([0-9][0-9]:){0,1}\s*static type warning");
+        const RegExp(r"/// ([0-9][0-9]:){0,1}\s*static type warning");
     RegExp compileTimeRegExp =
-        const RegExp(@"/// ([0-9][0-9]:){0,1}\s*compile-time error");
-    RegExp staticCleanRegExp = const RegExp(@"// @static-clean");
-    RegExp leadingHashRegExp = const RegExp(@"^#", multiLine: true);
-    RegExp isolateStubsRegExp = const RegExp(@"// IsolateStubs=(.*)");
+        const RegExp(r"/// ([0-9][0-9]:){0,1}\s*compile-time error");
+    RegExp staticCleanRegExp = const RegExp(r"// @static-clean");
+    RegExp leadingHashRegExp = const RegExp(r"^#", multiLine: true);
+    RegExp isolateStubsRegExp = const RegExp(r"// IsolateStubs=(.*)");
     RegExp domImportRegExp =
-        const RegExp(@"^#import.*(dart:(dom|html)|html\.dart).*\)",
+        const RegExp(r"^#import.*(dart:(dom|html)|html\.dart).*\)",
                      multiLine: true);
     RegExp libraryDefinitionRegExp =
-        const RegExp(@"^#library\(", multiLine: true);
+        const RegExp(r"^#library\(", multiLine: true);
     RegExp sourceOrImportRegExp =
-        const RegExp(@"^#(source|import|resource)\(", multiLine: true);
+        const RegExp(r"^#(source|import|resource)\(", multiLine: true);
     RegExp extraCommandRegExp =
-        const RegExp(@"// ExtraCommand=(.*)", multiLine: true);
+        const RegExp(r"// ExtraCommand=(.*)", multiLine: true);
     RegExp extraArgsRegExp =
-        const RegExp(@"// ExtraCommandArgs=(.*)", multiLine: true);
-
+        const RegExp(r"// ExtraCommandArgs=(.*)", multiLine: true);
     // Read the entire file into a byte buffer and transform it to a
     // String. This will treat the file as ascii but the only parts
     // we are interested in will be ascii in any case.
     RandomAccessFile file = new File.fromPath(filePath).openSync(FileMode.READ);
     List chars = new List(file.lengthSync());
     var offset = 0;
     while (offset != chars.length) {
       offset += file.readListSync(chars, offset, chars.length - offset);
     }
     file.closeSync();
@@ skipping 475 matching lines @@
  * $noCrash tests are expected to be flaky but not crash
  * $pass tests are expected to pass
  * $failOk tests are expected to fail that we won't fix
  * $fail tests are expected to fail that we should fix
  * $crash tests are expected to crash that we should fix
  * $timeout tests are allowed to timeout
 """;
     print(report);
    }
 }