Merge 153342 - Print preview: Use an ID instead of memory pointer string in WebUI.

chrome/browser/printing/printing_message_filter.cc

Index: chrome/browser/printing/printing_message_filter.cc
===================================================================
--- chrome/browser/printing/printing_message_filter.cc	(revision 153583)
+++ chrome/browser/printing/printing_message_filter.cc	(working copy)
@@ -374,10 +374,10 @@
   }
 }
 
-void PrintingMessageFilter::OnCheckForCancel(const std::string& preview_ui_addr,
+void PrintingMessageFilter::OnCheckForCancel(int32 preview_ui_id,
                                              int preview_request_id,
                                              bool* cancel) {
-  PrintPreviewUI::GetCurrentPrintPreviewStatus(preview_ui_addr,
+  PrintPreviewUI::GetCurrentPrintPreviewStatus(preview_ui_id,
                                                preview_request_id,
                                                cancel);
 }