Code to send diagnostic messages about cloud print proxy. Currently diagnosti...

chrome/service/cloud_print/print_system.h

Index: chrome/service/cloud_print/print_system.h
===================================================================
--- chrome/service/cloud_print/print_system.h	(revision 70946)
+++ chrome/service/cloud_print/print_system.h	(working copy)
@@ -131,6 +131,20 @@
                        JobSpooler::Delegate* delegate) = 0;
   };
 
+  class PrintSystemResult {
+   public:
+    PrintSystemResult(bool succeeded, const std::string& message)
+        : succeeded_(succeeded), message_(message) { }
+    bool succeeded() const { return succeeded_; }
+    std::string message() const { return message_; }
+
+   private:
+    bool succeeded_;
+    std::string message_;
+
+    PrintSystemResult() { }
+  };
+
   typedef Callback3<
       bool,
       const std::string&,
@@ -141,7 +155,7 @@
 
   // Initialize print system. This need to be called before any other function
   // of PrintSystem.
-  virtual void Init() = 0;
+  virtual PrintSystemResult Init() = 0;
 
   // Enumerates the list of installed local and network printers.
   virtual void EnumeratePrinters(printing::PrinterList* printer_list) = 0;