Revert of Add skia extension to allow setting default fontmgr on linux. Use it to allow the linux blimp clien…

skia/ext/fontmgr_default_linux.cc

-// Copyright 2016 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/ext/fontmgr_default_linux.h"
-
-#include "third_party/skia/include/ports/SkFontConfigInterface.h"
-#include "third_party/skia/include/ports/SkFontMgr.h"
-#include "third_party/skia/include/ports/SkFontMgr_FontConfigInterface.h"
-
-namespace {
-sk_sp<SkFontMgr> g_default_fontmgr;
-}  // namespace
-
-void SetDefaultSkiaFactory(sk_sp<SkFontMgr> fontmgr) {
-  g_default_fontmgr = fontmgr;
-}
-
-SK_API SkFontMgr* SkFontMgr::Factory() {
-  if (g_default_fontmgr) {
-    return SkRef(g_default_fontmgr.get());
-  }
-  sk_sp<SkFontConfigInterface> fci(SkFontConfigInterface::RefGlobal());
-  return fci ? SkFontMgr_New_FCI(std::move(fci)) : nullptr;
-}