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 6d2c45bb9d9775507401db5df26a8a08e98f0da5..2c7fac240ab01c624c5c6d7ff30617910b0d5537 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js
+++ b/third_party/WebKit/Source/devtools/front_end/sources/InplaceFormatterEditorAction.js
@@ -100,7 +100,42 @@ 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 oldDecorations = new Map(uiSourceCode.allLineDecorations());
+    uiSourceCode.removeAllDecorations();
+
+    if (!oldDecorations.size)
+      return;
+
+    for (var decorationList of oldDecorations.entries()) {
+      var type = decorationList[0];
+      var list = decorationList[1];
+      if (!list.size)
+        continue;
+
+      for (var decoration of list.entries()) {
+        var range = decoration[0];
+        var data = decoration[1];
+        var newRange = range;
+
+        [newRange.startLine, newRange.startColumn] = sourceMapping.originalToFormatted(
+                                                                          range.startLine, range.startColumn);
+
+        [newRange.endLine, newRange.endColumn] = sourceMapping.originalToFormatted(
+                                                                          range.endLine, range.endColumn);
+
+        uiSourceCode.addDecoration(newRange, /** @type {string} */ (type), data);
+      }
+    }
+  }
 };