Added GDI font emulation support for Flash.

content/public/common/render_font_warmup_win.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_COMMON_RENDER_FONT_WARMUP_WIN_H_
 #define CONTENT_PUBLIC_COMMON_RENDER_FONT_WARMUP_WIN_H_
 
+#include "base/files/file_path.h"
 #include "content/common/content_export.h"
 
 class SkFontMgr;
 class SkTypeface;
 
 namespace content {
 
 // Make necessary calls to cache the data for a given font, used before
 // sandbox lockdown.
 CONTENT_EXPORT void DoPreSandboxWarmupForTypeface(SkTypeface* typeface);
 
 // Get the shared font manager used during pre-sandbox warmup for DirectWrite
 // 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_PUBLIC_COMMON_RENDER_FONT_WARMUP_WIN_H_