Move i18n collator code to runtime.

src/i18n.h

Index: src/i18n.h
diff --git a/src/i18n.h b/src/i18n.h
index b9cbed1bbe8c3843b2a688d746beb4e8366bc1fe..5825ab6c6c783652fa8872bba47d93d4f5d5e8ae 100644
--- a/src/i18n.h
+++ b/src/i18n.h
@@ -33,6 +33,7 @@
 #include "v8.h"
 
 namespace U_ICU_NAMESPACE {
+class Collator;
 class DecimalFormat;
 class SimpleDateFormat;
 }
@@ -100,6 +101,29 @@ class NumberFormat {
   NumberFormat();
 };
 
+
+class Collator {
+ public:
+  // Create a collator for the specificied locale and options. Returns the
+  // resolved settings for the locale / options.
+  static icu::Collator* InitializeCollator(
+      Isolate* isolate,
+      Handle<String> locale,
+      Handle<JSObject> options,
+      Handle<JSObject> resolved);
+
+  // Unpacks collator object from corresponding JavaScript object.
+  static icu::Collator* UnpackCollator(Isolate* isolate, Handle<JSObject> obj);
+
+  // Release memory we allocated for the Collator once the JS object that holds
+  // the pointer gets garbage collected.
+  static void DeleteCollator(v8::Isolate* isolate,
+                             Persistent<v8::Object>* object,
+                             void* param);
+ private:
+  Collator();
+};
+
 } }  // namespace v8::internal
 
 #endif  // V8_I18N_H_