Use DirectWrite to populate list of avalible fonts

content/public/renderer/render_font_warmup_win.h

Index: content/public/renderer/render_font_warmup_win.h
diff --git a/content/public/renderer/render_font_warmup_win.h b/content/public/renderer/render_font_warmup_win.h
index 9624d88b6c6b98059af83f7eacbe73f0d986b39f..219da13467a1d48ee7d113dec169add2cf223f6c 100644
--- a/content/public/renderer/render_font_warmup_win.h
+++ b/content/public/renderer/render_font_warmup_win.h
@@ -7,11 +7,15 @@
 
 #include "content/common/content_export.h"
 
+struct IDWriteFactory;
 class SkFontMgr;
 class SkTypeface;
 
 namespace content {
 
+// Gets the system direct write factory on systems with DirectWrite support.
+CONTENT_EXPORT void CreateDirectWriteFactory(IDWriteFactory**);
+
 // Make necessary calls to cache the data for a given font, used before
 // sandbox lockdown.
 CONTENT_EXPORT void DoPreSandboxWarmupForTypeface(SkTypeface* typeface);