DevTools: Remove custom auto-close quote impementation

In 2014, CodeMirror had poor support for auto-closing quotes. In
response to bug 411238, a custom implementation of auto-closing
quotes was added. This assumed a US keyboard layout, and broke
some international keyboards.

CodeMirror has much better support for auto-closing quotes now,
so this patch removes the legacy code.

Bug: 578852
Change-Id: I9b80e6f628adadc7b37c39dab7be5eaa0c76d7a9
Reviewed-on: https://chromium-review.googlesource.com/830650Reviewed-by: Andrey Lushnikov <lushnikov@chromium.org>
Commit-Queue: Joel Einbinder <einbinder@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524552}

third_party/WebKit/Source/devtools/front_end/text_editor/CodeMirrorTextEditor.js

@@ -141,8 +141,6 @@ TextEditor.CodeMirrorTextEditor = class extends UI.VBox {
 
     this._codeMirror.setOption('keyMap', Host.isMac() ? 'devtools-mac' : 'devtools-pc');
 
-    this._codeMirror.addKeyMap({'\'': 'maybeAvoidSmartSingleQuotes', '\'"\'': 'maybeAvoidSmartDoubleQuotes'});
-
     this._codeMirror.setOption('flattenSpans', false);
 
     var maxHighlightLength = options.maxHighlightLength;
@@ -232,30 +230,6 @@ TextEditor.CodeMirrorTextEditor = class extends UI.VBox {
     codeMirror._codeMirrorTextEditor._doCamelCaseMovement(1, shift);
   }
 
-  /**
-   * @param {string} quoteCharacter
-   * @param {!CodeMirror} codeMirror
-   * @return {*}
-   */
-  static _maybeAvoidSmartQuotes(quoteCharacter, codeMirror) {
-    var textEditor = codeMirror._codeMirrorTextEditor;
-    if (!codeMirror.getOption('autoCloseBrackets'))
-      return CodeMirror.Pass;
-    var selections = textEditor.selections();
-    if (selections.length !== 1 || !selections[0].isEmpty())
-      return CodeMirror.Pass;
-
-    var selection = selections[0];
-    var token = textEditor.tokenAtTextPosition(selection.startLine, selection.startColumn);
-    if (!token || !token.type || token.type.indexOf('string') === -1)
-      return CodeMirror.Pass;
-    var line = textEditor.line(selection.startLine);
-    var tokenValue = line.substring(token.startColumn, token.endColumn);
-    if (tokenValue[0] === tokenValue[tokenValue.length - 1] && (tokenValue[0] === '\'' || tokenValue[0] === '"'))
-      return CodeMirror.Pass;
-    codeMirror.replaceSelection(quoteCharacter);
-  }
-
   /**
    * @param {string} modeName
    * @param {string} tokenPrefix
@@ -1401,12 +1375,6 @@ CodeMirror.commands.goSmartPageDown = function(codemirror) {
   codemirror.execCommand('goPageDown');
 };
 
-
-CodeMirror.commands.maybeAvoidSmartSingleQuotes =
-    TextEditor.CodeMirrorTextEditor._maybeAvoidSmartQuotes.bind(null, '\'');
-CodeMirror.commands.maybeAvoidSmartDoubleQuotes =
-    TextEditor.CodeMirrorTextEditor._maybeAvoidSmartQuotes.bind(null, '"');
-
 TextEditor.CodeMirrorTextEditor.LongLineModeLineLengthThreshold = 2000;
 TextEditor.CodeMirrorTextEditor.MaxEditableTextSize = 1024 * 1024 * 10;