[ios Mojo] Implemented chrome://version.

components/version_ui/version_handler_helper.cc

Index: components/version_ui/version_handler_helper.cc
diff --git a/components/version_ui/version_handler_helper.cc b/components/version_ui/version_handler_helper.cc
index 10f525bc6c017f4942ec6f4f14ff3f1c3e373be5..41eefc8eddc4bd41ff074bb310ed6d52dc980b91 100644
--- a/components/version_ui/version_handler_helper.cc
+++ b/components/version_ui/version_handler_helper.cc
@@ -35,17 +35,4 @@ std::vector<std::string> GetVariations() {
   return variations;
 }
 
-#if defined(OS_IOS)
-std::unique_ptr<base::Value> GetVariationsList() {
-  std::vector<std::string> variations = GetVariations();
-  std::unique_ptr<base::ListValue> variations_list(new base::ListValue);
-  for (std::vector<std::string>::const_iterator it = variations.begin();
-       it != variations.end(); ++it) {
-    variations_list->AppendString(*it);
-  }
-
-  return std::move(variations_list);
-}
-#endif
-
 }  // namespace version_ui