Updated *.pak file format to support both UTF8 and UTF16

ui/base/resource/data_pack.h

Index: ui/base/resource/data_pack.h
diff --git a/ui/base/resource/data_pack.h b/ui/base/resource/data_pack.h
index f6ee78d452a7bd6c6e1604d4e2c100f9bde81f6e..0cc3b31514aeb53f0d9bc1ee2082d9d6db5ac746 100644
--- a/ui/base/resource/data_pack.h
+++ b/ui/base/resource/data_pack.h
@@ -31,6 +31,13 @@ namespace ui {
 
 class UI_EXPORT DataPack {
  public:
+  // What type of encoding the text resources use.
+  enum TextEncodingType {
+    BINARY,
+    UTF8,
+    UTF16
+  };
+
   DataPack();
   ~DataPack();
 
@@ -47,9 +54,16 @@ class UI_EXPORT DataPack {
   // for localization strings.
   RefCountedStaticMemory* GetStaticMemory(uint16 resource_id) const;
 
-  // Writes a pack file containing |resources| to |path|.
+  // Writes a pack file containing |resources| to |path|. If there are any
+  // text resources to be written, their encoding must already agree to the
+  // |textEncodingType| specified. If no text resources are present, please
+  // indicate BINARY.
   static bool WritePack(const FilePath& path,
-                        const std::map<uint16, base::StringPiece>& resources);
+                        const std::map<uint16, base::StringPiece>& resources,
+                        TextEncodingType textEncodingType);
+
+  // Get the encoding type of text resources.
+  TextEncodingType GetTextEncodingType() const { return text_encoding_type_; }
 
  private:
   // The memory-mapped data.
@@ -58,6 +72,9 @@ class UI_EXPORT DataPack {
   // Number of resources in the data.
   size_t resource_count_;
 
+  // Type of encoding for text resources.
+  TextEncodingType text_encoding_type_;
+
   DISALLOW_COPY_AND_ASSIGN(DataPack);
 };