Rewrite gin/function_template.h to use C++11 variadic templates.

gin/array_buffer.cc

Index: gin/array_buffer.cc
diff --git a/gin/array_buffer.cc b/gin/array_buffer.cc
index b777402e644ff49a39365f623d8d79b4efb13515..aecfe26a2b11efe83beaa0cfa1417430bba11c99 100644
--- a/gin/array_buffer.cc
+++ b/gin/array_buffer.cc
@@ -130,6 +130,14 @@ ArrayBuffer::ArrayBuffer()
       num_bytes_(0) {
 }
 
+ArrayBuffer::ArrayBuffer(const ArrayBuffer& other)
+    : private_(other.private_),
+      bytes_(other.bytes_),
+      num_bytes_(other.num_bytes_) {
+
+}
+
+
 ArrayBuffer::ArrayBuffer(v8::Isolate* isolate,
                          v8::Handle<v8::ArrayBuffer> array) {
   private_ = ArrayBuffer::Private::From(isolate, array);
@@ -165,6 +173,12 @@ ArrayBufferView::ArrayBufferView()
       num_bytes_(0) {
 }
 
+ArrayBufferView::ArrayBufferView(const ArrayBufferView& other)
+    : array_buffer_(other.array_buffer_),
+      offset_(other.offset_),
+      num_bytes_(other.num_bytes_) {
+}
+
 ArrayBufferView::ArrayBufferView(v8::Isolate* isolate,
                                  v8::Handle<v8::ArrayBufferView> view)
     : array_buffer_(isolate, view->Buffer()),