Added GDI font emulation support for Flash.

content/ppapi_plugin/ppapi_thread.cc

Index: content/ppapi_plugin/ppapi_thread.cc
diff --git a/content/ppapi_plugin/ppapi_thread.cc b/content/ppapi_plugin/ppapi_thread.cc
index aa801aafe9be5e2a7801102474124d7f3706bdeb..c7c2de33097b18ced4e508f17fc58437715db78d 100644
--- a/content/ppapi_plugin/ppapi_thread.cc
+++ b/content/ppapi_plugin/ppapi_thread.cc
@@ -51,6 +51,7 @@
 #if defined(OS_WIN)
 #include "base/win/win_util.h"
 #include "base/win/windows_version.h"
+#include "content/public/common/render_font_warmup_win.h"
 #include "sandbox/win/src/sandbox.h"
 #elif defined(OS_MACOSX)
 #include "content/common/sandbox_init_mac.h"
@@ -425,6 +426,13 @@ void PpapiThread::OnLoadPlugin(const base::FilePath& path,
 
     WarmupWindowsLocales(permissions);
 
+    // If Win32k lockdown is on and loading Flash then we need to patch
+    // its GDI font enumeration code.

[palmer, 2015/09/11 22:34:16]

Nit: The code is admirably clear, so I don't think this comment is strictly
necessary.

+    if (IsWin32kLockdownEnabled() &&
+        permissions.HasPermission(ppapi::PERMISSION_FLASH)) {
+      PatchGdiFontEnumeration(path);
+    }
+
     g_target_services->LowerToken();
   }
 #endif