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);
+      this._formatDecorations(uiSourceCode, formatterMapping);
+
       this._sourcesView.showSourceLocation(uiSourceCode, start[0], start[1]);
     }
   }
+
+  /**
+   * @param {!Workspace.UISourceCode} uiSourceCode
+   * @param {!Sources.FormatterSourceMapping} sourceMapping
+   */
+  _formatDecorations(uiSourceCode, sourceMapping) {
+    var decorations = uiSourceCode.allDecorations();
+    if (!decorations.length)
+      return;
+
+    uiSourceCode.removeAllDecorations();
+
+    for (var decoration of decorations) {
+      var range = decoration.range();
+      var startLocation = new Array(2);

[lushnikov, 2016/11/17 22:50:43]

drop these

+      var endLocation = new Array(2);
+
+      startLocation = sourceMapping.originalToFormatted(range.startLine,range.startColumn);

[lushnikov, 2016/11/17 22:50:43]

why create arrays beforehand? just:

var startLocation = sourceMapping.originalToFormatted(range.startLine,
range.startColumn);
var endLocation = sourceMapping.originalToFormatted(range.endLine,
range.endColumn);

+
+      endLocation = sourceMapping.originalToFormatted(range.endLine,range.endColumn);

[lushnikov, 2016/11/17 22:50:43]

nit: space is required between function arguments

+
+      uiSourceCode.addDecoration(
+          new Common.TextRange(startLocation[0], startLocation[1],
+                               endLocation[0], endLocation[1]),
+          /** @type {string} */ (decoration.type()),
+          decoration.data());
+    }
+  }
 };