Implement skia sandbox callback

skia/ext/skia_sandbox_support_win.cc

+// Copyright (c) 2006-2008 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.
+
+#include "skia_sandbox_support_win.h"

[vandebo (ex-Chrome), 2011/11/22 22:17:13]

nit: tools/sort-header.py says that this comes at the end.

+#include "SkFontHost.h"
+#include "SkTypeface_win.h"
+
+static SkiaEnsureTypefaceAccessible g_skia_ensure_typeface_accessible = NULL;
+
+SK_API void SetSkiaEnsureTypefaceAccessible(SkiaEnsureTypefaceAccessible func) {
+  // This function is supposed to be called once in process life time.

[vandebo (ex-Chrome), 2011/11/22 22:17:13]

nit: This function should only be called once.

+  SkASSERT(g_skia_ensure_typeface_accessible == NULL);
+  g_skia_ensure_typeface_accessible = func;
+}
+
+// static
+void SkFontHost::EnsureTypefaceAccessible(const SkTypeface& typeface) {
+  if (g_skia_ensure_typeface_accessible) {
+    LOGFONT lf;
+    SkLOGFONTFromTypeface(&typeface, &lf);
+    g_skia_ensure_typeface_accessible(lf);
+  }
+}