Remove frogpad, as it's unused.

tools/testing/frogpad/frogpad.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// 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.
-
-/**
- * This is the entrypoint for a version of the frog compiler that
- * can run in the browser.
- * Because this is running in the browser, frog cannot access
- * the file system.  Instead, we assume the all necessary files
- * have been placed in inert <script> elements somewhere on the page.
- * (See frogpad.py for more details on how the html page is constructed.)
- */
-
-#import("dart:html", prefix:"html");
-#import("../../../frog/lang.dart");
-#import("../../../frog/file_system.dart");
-
-// id of script element containing name of the main dart file
-// to compile.
-final String MAIN_ID = "main_id";
-
-// id of script element containing name of the frog directory
-final String FROGDIR_ID = "frogdir_id";
-
-void main() {
-  StringBuffer warnings = new StringBuffer();
-  HtmlFileSystem fs = new HtmlFileSystem();
-  String frogDir = getText(FROGDIR_ID);
-  String mainFile = getText(MAIN_ID);
-  setText("input", fs.readAll(mainFile));
-
-  int time1 = new Date.now().value;
-  List<String> args = [
-      "dummy_arg1",
-      "dummy_arg2",
-      "--enable_type_checks",
-      "--enable_asserts",
-    mainFile];
-  parseOptions(frogDir, args, fs);
-
-  options.useColors = false;
-
-  initializeWorld(fs);
-  world.messageHandler = void _(
-      String prefix, String message, SourceSpan span) {
-    String location = "";
-    if (span !== null) {
-      location = span.locationText;
-    }
-    warnings.add('$prefix$message$location\n');
-  };
-  bool success = world.compile();
-  int time2 = new Date.now().value;
-  String output = "throw 'frogpad compilation error';\n";
-  if (success) {
-    output = world.getGeneratedCode();
-  }
-  setText("output", output);
-  setText("warnings", warnings.toString());
-
-  String timing = "generated ${output.length} characters in "
-      "${((time2 - time1) / 1000).toStringAsPrecision(3)} seconds";
-  setText("timing", timing);
-}
-
-void setText(String id, String text) {
-  html.Element element = html.document.query("#$id");
-  if (element === null) {
-    throw new Exception("Can't find element $id");
-  }
-  element.innerHTML = htmlEscape(text);
-}
-
-String getText(String id) {
-  html.Element element = html.document.query("#$id");
-  if (element === null) {
-    throw new Exception("Can't find element $id");
-  }
-  return element.text.trim();
-}
-
-// TODO(rnystrom): should exist in standard lib somewhere
-String htmlEscape(String text) {
-  return text.replaceAll('&', '&amp;')
-             .replaceAll('>', '&gt;')
-             .replaceAll('<', '&lt;');
-}
-
-class HtmlFileSystem implements FileSystem {
-
-  HtmlFileSystem() {}
-
-  String readAll(String filename) {
-    String text = getText(idOfFilename(filename));
-    print("read $filename (${text.length} bytes)");
-    return text;
-  }
-
-  /**
-   * Returns the id of the <script> element that contains
-   * the contents of this file.
-   * The id is constructed by taking the filename and replacing
-   * all slashes and dots with underscores.  For example, the file name:
-   *
-   *   "/usr/local/src/dart/frog/lang.dart"
-   *
-   * becomes:
-   *
-   *   "_usr_local_src_dart_frog_lang_dart"
-   *
-   * And, so this file's contents will be found in a <script>
-   * element that looks like this:
-   *
-   *   <script type=application/inert id="_usr_local_src_dart_frog_lang_dart">
-   *      ... contents of file lang.dart placed here ...
-   *   etc.
-   */
-  String idOfFilename(String filename) {
-    return filename.replaceAll("/", "_").replaceAll(".", "_");
-  }
-
-  void writeString(String outfile, String text) {
-    throw new UnsupportedOperationException("");
-  }
-
-  bool fileExists(String filename) {
-    // frog calls this to check if files exist before reading them.  We return
-    // true here for all files, and let it fail later if frog attempts to read
-    // the contents of a non-existent file.
-    return true;
-  }
-
-  void createDirectory(String path, [bool recursive]) {
-    throw new UnsupportedOperationException("");
-  }
-
-  void removeDirectory(String path, [bool recursive]) {
-    throw new UnsupportedOperationException("");
-  }
-}