Apply scoped_ptr -> std::unique_ptr conversion to comment

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 4a9410c788105f93c7c1f856a5b39f873a4c8964..b7bcd9b704dfa8993b67c92d45a2ae275c5f8f5c 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -854,8 +854,8 @@ RenderViewImpl::~RenderViewImpl() {
   }
 
 #if defined(OS_ANDROID)
-  // The date/time picker client is both a scoped_ptr member of this class and
-  // a RenderViewObserver. Reset it to prevent double deletion.
+  // The date/time picker client is both a std::unique_ptr member of this class
+  // and a RenderViewObserver. Reset it to prevent double deletion.
   date_time_picker_client_.reset();
 #endif