Add a Windows layout test for validating symbol CMAP encoding support

third_party/WebKit/LayoutTests/fast/text/symbol-cmap-expected.html

Index: third_party/WebKit/LayoutTests/fast/text/symbol-cmap-expected.html
diff --git a/third_party/WebKit/LayoutTests/fast/text/symbol-cmap-expected.html b/third_party/WebKit/LayoutTests/fast/text/symbol-cmap-expected.html
new file mode 100644
index 0000000000000000000000000000000000000000..1a189421ebe56a275c6f51383d2a61b4d1f5a8fa
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/fast/text/symbol-cmap-expected.html
@@ -0,0 +1,15 @@
+<style>
+@font-face {
+font-family: SymbolCMAPTestRef;
+src: url("resources/SymbolCMAPTestRef.ttf");
+}
+
+body {
+font-family: SymbolCMAPTestRef;
+font-size: 200px;
+}
+</style>
+<!-- For serving as the reference result this test accesses the "Symbol CMAP
+  Encoding OK" glyph not through a Symbol encoded CMAP, but through a regular
+  Unicode encoded CMAP table. -->
+&#xE000;