re-land 187283 -- switch to skia's version of SkFontHost_fontconfig

skia/ext/skia_utils_base.cc

+// Copyright (c) 2013 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/skia_utils_base.h"
+
+namespace skia {
+
+bool ReadSkString(const Pickle& pickle, PickleIterator* iter, SkString* str) {
+  int         reply_length;
+  const char* reply_text;
+
+  if (!pickle.ReadData(iter, &reply_text, &reply_length))
+    return false;
+
+  if (str)
+    str->set(reply_text, reply_length);
+  return true;
+}
+
+bool ReadSkFontIdentity(const Pickle& pickle, PickleIterator* iter,
+                        SkFontConfigInterface::FontIdentity* identity) {
+  uint32_t    reply_id;
+  uint32_t    reply_ttcIndex;
+  int         reply_length;
+  const char* reply_text;
+
+  if (!pickle.ReadUInt32(iter, &reply_id) ||
+      !pickle.ReadUInt32(iter, &reply_ttcIndex) ||
+      !pickle.ReadData(iter, &reply_text, &reply_length))
+    return false;
+
+  if (identity) {
+    identity->fID = reply_id;
+    identity->fTTCIndex = reply_ttcIndex;
+    identity->fString.set(reply_text, reply_length);
+  }
+  return true;
+}
+
+bool WriteSkString(Pickle* pickle, const SkString& str) {
+  return pickle->WriteData(str.c_str(), str.size());
+}
+
+bool WriteSkFontIdentity(Pickle* pickle,
+                         const SkFontConfigInterface::FontIdentity& identity) {
+  return pickle->WriteUInt32(identity.fID) &&
+         pickle->WriteUInt32(identity.fTTCIndex) &&
+         WriteSkString(pickle, identity.fString);
+}
+
+}  // namespace skia
+