Adds comment to AdjustTextForCopy. I saw your request for a...

chrome/browser/autocomplete/autocomplete_edit.cc

Index: chrome/browser/autocomplete/autocomplete_edit.cc
===================================================================
--- chrome/browser/autocomplete/autocomplete_edit.cc	(revision 45700)
+++ chrome/browser/autocomplete/autocomplete_edit.cc	(working copy)
@@ -184,6 +184,9 @@
     return;  // Can't be parsed as a url, no need to adjust text.
 
   if (!user_input_in_progress() && is_all_selected) {
+    // The user selected all the text and has not edited it. Use the url as the
+    // text so that if the scheme was stripped it's added back, and the url
+    // is unescaped (we escape parts of the url for display).
     *text = UTF8ToWide(url->spec());
     *write_url = true;
     return;