Fix Refcount in FontDataCache for objects from FontFallbackIterator

third_party/WebKit/Source/platform/fonts/FontDataForRangeSet.cpp

Index: third_party/WebKit/Source/platform/fonts/FontDataForRangeSet.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/FontDataForRangeSet.cpp b/third_party/WebKit/Source/platform/fonts/FontDataForRangeSet.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..8e71f498c8c88e6d205355c51abf4764677c48ef
--- /dev/null
+++ b/third_party/WebKit/Source/platform/fonts/FontDataForRangeSet.cpp
@@ -0,0 +1,24 @@
+// 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 "platform/fonts/FontDataForRangeSet.h"
+
+#include "platform/fonts/FontCache.h"
+
+namespace blink {
+
+FontDataForRangeSet::FontDataForRangeSet(const FontDataForRangeSet& other)
+{
+    m_fontData = other.m_fontData;
+    m_rangeSet = other.m_rangeSet;
+}
+
+FontDataForRangeSetFromCache::~FontDataForRangeSetFromCache()
+{
+    if (m_fontData && !m_fontData->isCustomFont()) {
+        FontCache::fontCache()->releaseFontData(m_fontData.get());
+    }
+}
+
+} // namespace blink