Devtools: Pretty print fix for CSS coverage decorations.

third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 /**
  * @implements {Sources.SourcesView.EditorAction}
  * @unrestricted
  */
 Sources.InplaceFormatterEditorAction = class {
   /**
    * @param {!Common.Event} event
@@ skipping 81 matching lines @@
      */
     function innerCallback(formattedContent, formatterMapping) {
       if (uiSourceCode.workingCopy() === formattedContent)
         return;
       var sourceFrame = this._sourcesView.viewForFile(uiSourceCode);
       var start = [0, 0];
       if (sourceFrame) {
         var selection = sourceFrame.selection();
         start = formatterMapping.originalToFormatted(selection.startLine, selection.startColumn);
       }
-      uiSourceCode.setWorkingCopy(formattedContent);
+      uiSourceCode.setWorkingCopy(formattedContent, Workspace.UISourceCode.SourceMapping.create(
+            formatterMapping._originalLineEndings, formatterMapping._formattedLineEndings, formatterMapping._mapping));
       this._sourcesView.showSourceLocation(uiSourceCode, start[0], start[1]);
     }
   }
 };