anchor.diff:  @ArgExample('--content-shell-bin ~/dartium/content_shell ~/my_project/',
       help: 'Runs all tests of the project located at ~/my_project/. Sets '
             '~/dartium/content_shell as the Content Shell executable.')
  -runTests(
  +void runTests(
       @Rest(help: 'Path to the project root/test folder or list of path to '
                   'individual test files to run. If omitted all tests of the '
                   'current project will be discovered and ran.')
  
positive.code:         try {
            dartBinaries.checkBrowserBinaries();
          } catch (e) {
            stderr.writeln(redPen("$e"));
            stderr.writeln(redPen("You can choose to skip all browser tests by "
                "using the --skip-browser-tests option and this binary won't be "
                "needed.\n"));
            exit(2);
          }
          print(greenPen("Browser binaries OK."));
        } else if (skipBrowserTests) {
          // If skipBrowserTests is true we remove all Browser tests.
          tests = tests.where(
  
negative.code:   try {
      dartBinaries.checkDartSdkBinaries();
    } catch (e) {
      stderr.writeln(_redPen("$e\n"));
      exit(2);
    }
    print(_greenPen("Dart SDK binaries OK."));
  
    // Step 2: Check if a Dart project can be found in [projectPathUri].
  
  