SkPDF: SkPDFFont organization changes.

src/pdf/SkPDFMakeToUnicodeCmap.h

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkPDFMakeToUnicodeCmap_DEFINED
+#define SkPDFMakeToUnicodeCmap_DEFINED
+
+#include "SkTDArray.h"
+#include "SkPDFFont.h"
+#include "SkStream.h"
+
+sk_sp<SkPDFStream> SkPDFMakeToUnicodeCmap(
+        const SkTDArray<SkUnichar>& glyphToUnicode,
+        const SkPDFGlyphSet* subset,
+        bool multiByteGlyphs,
+        SkGlyphID firstGlyphID,
+        SkGlyphID lastGlyphID);
+
+// Exposed for unit testing.
+void SkPDFAppendCmapSections(const SkTDArray<SkUnichar>& glyphToUnicode,
+                             const SkPDFGlyphSet* subset,
+                             SkDynamicMemoryWStream* cmap,
+                             bool multiByteGlyphs,
+                             SkGlyphID firstGlyphID,
+                             SkGlyphID lastGlyphID);
+
+#endif  // SkPDFMakeToUnicodeCmap_DEFINED