Added GDI font emulation support for Flash.

content/common/font_warmup_win.h

Index: content/common/font_warmup_win.h
diff --git a/content/common/font_warmup_win.h b/content/common/font_warmup_win.h
index 162fec5fb6b4efd80e8bc812bfdd196f19ecb467..68f3515f9b8315546ff0adc75e6e8d6ce1411130 100644
--- a/content/common/font_warmup_win.h
+++ b/content/common/font_warmup_win.h
@@ -5,6 +5,7 @@
 #ifndef CONTENT_COMMON_FONT_WARMUP_WIN_H_
 #define CONTENT_COMMON_FONT_WARMUP_WIN_H_
 
+#include "base/files/file_path.h"
 #include "content/common/content_export.h"
 
 class SkFontMgr;
@@ -20,6 +21,26 @@ CONTENT_EXPORT void DoPreSandboxWarmupForTypeface(SkTypeface* typeface);
 // fonts.
 CONTENT_EXPORT SkFontMgr* GetPreSandboxWarmupFontMgr();
 
+class GdiFontPatchData {
+ public:
+  virtual ~GdiFontPatchData() {}
+
+ protected:
+  GdiFontPatchData() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(GdiFontPatchData);
+};
+
+// Hook a module's imported GDI font functions to reimplement font enumeration
+// and font data retrieval for DLLs which can't be easily modified.
+CONTENT_EXPORT GdiFontPatchData* PatchGdiFontEnumeration(
+    const base::FilePath& path);
+
+// Sets the pre-sandbox warmup font manager directly. This should only be used
+// for testing the implementation.
+CONTENT_EXPORT void SetPreSandboxWarmupFontMgr(SkFontMgr* fontmgr);
+
 }  // namespace content
 
 #endif  // CONTENT_COMMON_FONT_WARMUP_WIN_H_