Merge revision 1635 changes:

- Make |string| parameter to CefStringVisitor::Visit optional (issue #1216).

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/1750@1636 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/cef_string_visitor.h

@@ -48,7 +48,7 @@ class CefStringVisitor : public virtual CefBase {
   ///
   // Method that will be executed.
   ///
-  /*--cef()--*/
+  /*--cef(optional_param=string)--*/
   virtual void Visit(const CefString& string) =0;
 };
 

libcef_dll/cpptoc/string_visitor_cpptoc.cc

@@ -22,10 +22,7 @@ void CEF_CALLBACK string_visitor_visit(struct _cef_string_visitor_t* self,
   DCHECK(self);
   if (!self)
     return;
-  // Verify param: string; type: string_byref_const
-  DCHECK(string);
-  if (!string)
-    return;
+  // Unverified params: string
 
   // Execute
   CefStringVisitorCppToC::Get(self)->Visit(

libcef_dll/ctocpp/string_visitor_ctocpp.cc

@@ -21,10 +21,7 @@ void CefStringVisitorCToCpp::Visit(const CefString& string) {
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
-  // Verify param: string; type: string_byref_const
-  DCHECK(!string.empty());
-  if (string.empty())
-    return;
+  // Unverified params: string
 
   // Execute
   struct_->visit(struct_,