Add Pepper TrueType font API plumbing.

content/renderer/pepper/pepper_truetype_font.h

Index: content/renderer/pepper/pepper_truetype_font.h
diff --git a/content/renderer/pepper/pepper_truetype_font.h b/content/renderer/pepper/pepper_truetype_font.h
new file mode 100644
index 0000000000000000000000000000000000000000..8eb6bd7adbc4b3ff6e40f73d7a3c97951acb9563
--- /dev/null
+++ b/content/renderer/pepper/pepper_truetype_font.h
@@ -0,0 +1,50 @@
+// 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.
+
+#ifndef CONTENT_RENDERER_PEPPER_PEPPER_TRUETYPE_FONT_H_
+#define CONTENT_RENDERER_PEPPER_PEPPER_TRUETYPE_FONT_H_
+
+#include <string>
+#include <vector>
+
+#include "ppapi/proxy/serialized_structs.h"
+
+namespace content {
+
+class PepperTrueTypeFont {
+ public:
+  // Creates a font matching the given descriptor. The exact font that is
+  // returned will depend on the host platform's font matching and fallback
+  // algorithm.
+  static PepperTrueTypeFont* Create(
+      const ppapi::proxy::SerializedTrueTypeFontDesc& desc);
+  virtual ~PepperTrueTypeFont() {}
+
+  // Returns true if the font was successfully created, false otherwise.
+  virtual bool IsValid() = 0;
+
+  // Returns a description of the actual font. Use this to see the actual
+  // characteristics of the font after running the host platform's font matching
+  // and fallback algorithm. Returns PP_OK on success, a Pepper error code on
+  // failure. 'desc' is written only on success.
+  virtual int32_t Describe(ppapi::proxy::SerializedTrueTypeFontDesc* desc) = 0;
+
+  // Retrieves an array of TrueType table tags contained in this font. Returns
+  // the number of tags on success, a Pepper error code on failure. 'tags' are
+  // written only on success.
+  virtual int32_t GetTableTags(std::vector<uint32_t>* tags) = 0;
+
+  // Gets a TrueType font table corresponding to the given tag. The 'offset' and
+  // 'max_data_length' parameters determine what part of the table is returned.
+  // Returns the data size in bytes on success, a Pepper error code on failure.
+  // 'data' is written only on success.
+  virtual int32_t GetTable(uint32_t table_tag,
+                           int32_t offset,
+                           int32_t max_data_length,
+                           std::string* data) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_PEPPER_PEPPER_TRUETYPE_FONT_H_