Add support for printing selection only flag. This only adds the flag to the ...

chrome/renderer/print_web_view_helper.cc

Index: chrome/renderer/print_web_view_helper.cc
===================================================================
--- chrome/renderer/print_web_view_helper.cc	(revision 17852)
+++ chrome/renderer/print_web_view_helper.cc	(working copy)
@@ -127,10 +127,16 @@
                                           render_view_->host_window(),
                                           default_settings.document_cookie,
                                           expected_pages_count,
+                                          true,  // has_selection
                                           &print_settings);
       if (Send(msg)) {
         msg = NULL;
 
+        // Printing selection only not supported yet.
+        if (print_settings.params.selection_only) {
+          NOTIMPLEMENTED();
+        }
+
         // If the settings are invalid, early quit.
         if (print_settings.params.dpi &&
             print_settings.params.document_cookie) {