mojo: Create a basic clipboard.

mojo/public/cpp/bindings/array.h

Index: mojo/public/cpp/bindings/array.h
diff --git a/mojo/public/cpp/bindings/array.h b/mojo/public/cpp/bindings/array.h
index 9b5aff898587ca71bb04ee1dda0f04c1d35f70cc..0ef62619439c7e03642eb1805f3de9d52c212c4b 100644
--- a/mojo/public/cpp/bindings/array.h
+++ b/mojo/public/cpp/bindings/array.h
@@ -68,6 +68,9 @@ class Array {
 
   bool is_null() const { return is_null_; }
 
+  ConstRefType front() const { return vec_.front(); }
+  RefType front() { return vec_.front(); }
+
   size_t size() const { return vec_.size(); }
 
   ConstRefType at(size_t offset) const { return Traits::at(&vec_, offset); }