Devtools: Pretty print fix for CSS coverage decorations.

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

Index: third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js b/third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js
index b703d279eb5cec8055e0a3d25cdda210bc4dd2c6..f2c6c34758a3b767399ab86b1d81c3208543a52a 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js
+++ b/third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js
@@ -99,7 +99,32 @@ Sources.InplaceFormatterEditorAction = class {
         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 = sourceMapping.originalToFormatted(range.startLine, range.startColumn);
+      var endLocation = sourceMapping.originalToFormatted(range.endLine, range.endColumn);
+
+      uiSourceCode.addDecoration(
+          new Common.TextRange(...startLocation, ...endLocation),
+          /** @type {string} */ (decoration.type()),
+          decoration.data());
+    }
+  }
 };