Revert of Use CTFontCreateForString for RenderTextHarfbuzz on Mac

ui/gfx/font_fallback_win.h

Index: ui/gfx/font_fallback_win.h
diff --git a/ui/gfx/font_fallback_win.h b/ui/gfx/font_fallback_win.h
index b9d8339e2148b6d0775e00cfb5b2be308c0c5b9c..7b5dec9e1d50ad24149e3545ca7a71410ce928bb 100644
--- a/ui/gfx/font_fallback_win.h
+++ b/ui/gfx/font_fallback_win.h
@@ -81,6 +81,14 @@
 
 }  // namespace internal
 
+// Finds a fallback font to render the specified |text| with respect to an
+// initial |font|. Returns the resulting font via out param |result|. Returns
+// |true| if a fallback font was found.
+bool GFX_EXPORT GetFallbackFont(const Font& font,
+                                const wchar_t* text,
+                                int text_length,
+                                Font* result);
+
 }  // namespace gfx
 
 #endif  // UI_GFX_FONT_FALLBACK_WIN_H_