Move normalization into services

Author: uniqueiniquity

src/server/session.ts

@@ -793,7 +793,7 @@ namespace ts.server {
         private getDocumentHighlights(args: protocol.DocumentHighlightsRequestArgs, simplifiedResult: boolean): ReadonlyArray<protocol.DocumentHighlightsItem> | ReadonlyArray<DocumentHighlights> {
             const { file, project } = this.getFileAndProject(args);
             const position = this.getPositionInFile(args, file);
-            const documentHighlights = project.getLanguageService().getDocumentHighlights(file, position, map(args.filesToSearch, toNormalizedPath));
+            const documentHighlights = project.getLanguageService().getDocumentHighlights(file, position, args.filesToSearch);
 
             if (!documentHighlights) {
                 return emptyArray;

src/services/services.ts

@@ -1673,6 +1673,7 @@ namespace ts {
         }
 
         function getDocumentHighlights(fileName: string, position: number, filesToSearch: ReadonlyArray<string>): DocumentHighlights[] {
+            filesToSearch = ts.map(filesToSearch, ts.normalizePath);
             Debug.assert(contains(filesToSearch, fileName));
             synchronizeHostData();
             const sourceFilesToSearch = map(filesToSearch, f => Debug.assertDefined(program.getSourceFile(f)));