DevTools: do not use Bindings.NetworkProject.styleHeaderForUISourceCode in SourceFormatter

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

 // Copyright 2017 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.
 
 Sources.SourceFormatData = class {
   /**
    * @param {!Workspace.UISourceCode} originalSourceCode
    * @param {!Workspace.UISourceCode} formattedSourceCode
    * @param {!Sources.FormatterSourceMapping} mapping
    */
@@ skipping 221 matching lines @@
     return [];
   }
 };
 
 /**
  * @implements {Bindings.CSSWorkspaceBinding.SourceMapping}
  */
 Sources.SourceFormatter.StyleMapping = class {
   constructor() {
     Bindings.cssWorkspaceBinding.addSourceMapping(this);
+    this._styleHeaderSymbol = Symbol('Sources.SourceFormatter.StyleMapping');
   }
 
   /**
    * @override
    * @param {!SDK.CSSLocation} rawLocation
    * @return {?Workspace.UILocation}
    */
   rawLocationToUILocation(rawLocation) {
     var styleHeader = rawLocation.header();
     var formatData = styleHeader && Sources.SourceFormatData._for(styleHeader);
     if (!formatData)
       return null;
     var formattedLocation =
         formatData.mapping.originalToFormatted(rawLocation.lineNumber, rawLocation.columnNumber || 0);
     return formatData.formattedSourceCode.uiLocation(formattedLocation[0], formattedLocation[1]);
   }
 
   /**
    * @override
    * @param {!Workspace.UILocation} uiLocation
    * @return {!Array<!SDK.CSSLocation>}
    */
   uiLocationToRawLocations(uiLocation) {
     var formatData = Sources.SourceFormatData._for(uiLocation.uiSourceCode);
     if (!formatData)
       return [];
     var originalLocation = formatData.mapping.formattedToOriginal(uiLocation.lineNumber, uiLocation.columnNumber);
-    var header = Bindings.NetworkProject.styleHeaderForUISourceCode(formatData.originalSourceCode);
+    var header = formatData.originalSourceCode[this._styleHeaderSymbol];
     if (!header)
       return [];
     return [new SDK.CSSLocation(header, originalLocation[0], originalLocation[1])];
   }
 
   /**
    * @param {!Sources.SourceFormatData} formatData
    * @param {boolean} enable
    */
   _setSourceMappingEnabled(formatData, enable) {
     var original = formatData.originalSourceCode;
-    var styleHeader = Bindings.NetworkProject.styleHeaderForUISourceCode(original);
+    var rawLocations = Bindings.cssWorkspaceBinding.uiLocationToRawLocations(original.uiLocation(0, 0));
+    var styleHeader = rawLocations.length ? rawLocations[0].header() : null;

[caseq, 2017/05/16 23:54:30]

Let's take care of all possible headers here?

[lushnikov, 2017/05/17 00:17:49]

Sure!

     if (!styleHeader)
       return;
-    if (enable)
+    if (enable) {
+      original[this._styleHeaderSymbol] = styleHeader;
       styleHeader[Sources.SourceFormatData._formatDataSymbol] = formatData;
-    else
+    } else {
+      original[this._styleHeaderSymbol] = null;
       delete styleHeader[Sources.SourceFormatData._formatDataSymbol];
+    }
     Bindings.cssWorkspaceBinding.updateLocations(styleHeader);
   }
 };
 
 Sources.sourceFormatter = new Sources.SourceFormatter();