DevTools: support resolving a UILocation to multiple raw script locations

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 137 matching lines @@
     var columnNumber = rawLocation.columnNumber || 0;
     var formattedLocation = formatData.mapping.originalToFormatted(lineNumber, columnNumber);
     return formatData.formattedSourceCode.uiLocation(formattedLocation[0], formattedLocation[1]);
   }
 
   /**
    * @override
    * @param {!Workspace.UISourceCode} uiSourceCode
    * @param {number} lineNumber
    * @param {number} columnNumber
-   * @return {?SDK.DebuggerModel.Location}
+   * @return {!Array<!SDK.DebuggerModel.Location>}
    */
-  uiLocationToRawLocation(uiSourceCode, lineNumber, columnNumber) {
+  uiLocationToRawLocations(uiSourceCode, lineNumber, columnNumber) {
     var formatData = Sources.SourceFormatData._for(uiSourceCode);
     if (!formatData)
-      return null;
+      return [];
     var originalLocation = formatData.mapping.formattedToOriginal(lineNumber, columnNumber);
     var scripts = this._scriptsForUISourceCode(formatData.originalSourceCode);
     if (!scripts.length)
-      return null;
-    return scripts[0].debuggerModel.createRawLocation(scripts[0], originalLocation[0], originalLocation[1]);
+      return [];
+    var location = scripts[0].debuggerModel.createRawLocation(scripts[0], originalLocation[0], originalLocation[1]);
+    return location ? [location] : [];
   }
 
   /**
    * @override
    * @return {boolean}
    */
   isIdentity() {
     return false;
   }
 
@@ skipping 39 matching lines @@
     if (uiSourceCode.contentType() === Common.resourceTypes.Document) {
       var target = Bindings.NetworkProject.targetForUISourceCode(uiSourceCode);
       var debuggerModel = target && target.model(SDK.DebuggerModel);
       if (debuggerModel) {
         var scripts = debuggerModel.scriptsForSourceURL(uiSourceCode.url())
                           .filter(script => script.isInlineScript() && !script.hasSourceURL);
         return scripts;
       }
     }
     if (uiSourceCode.contentType().isScript()) {
-      var rawLocation = Bindings.debuggerWorkspaceBinding.uiLocationToRawLocation(uiSourceCode, 0, 0);
-      if (rawLocation)
-        return [rawLocation.script()];
+      return Bindings.debuggerWorkspaceBinding.uiLocationToRawLocations(uiSourceCode, 0, 0)
+          .map(location => location.script());
     }
     return [];
   }
 };
 
 /**
  * @implements {Bindings.CSSWorkspaceBinding.SourceMapping}
  */
 Sources.SourceFormatter.StyleMapping = class {
   constructor() {
@@ skipping 26 matching lines @@
       return;
     if (enable)
       styleHeader[Sources.SourceFormatData._formatDataSymbol] = formatData;
     else
       delete styleHeader[Sources.SourceFormatData._formatDataSymbol];
     Bindings.cssWorkspaceBinding.updateLocations(styleHeader);
   }
 };
 
 Sources.sourceFormatter = new Sources.SourceFormatter();