Implement window.print() on Android

chrome/browser/printing/printer_query.h

Index: chrome/browser/printing/printer_query.h
diff --git a/chrome/browser/printing/printer_query.h b/chrome/browser/printing/printer_query.h
index dcabfdd0d13cd1cf5073ac6c82a73207808c9924..80e5120ffa001a321203cda0dcaccbb10889568f 100644
--- a/chrome/browser/printing/printer_query.h
+++ b/chrome/browser/printing/printer_query.h
@@ -64,6 +64,8 @@ class PrinterQuery : public PrintJobWorkerOwner {
   // Returns if a worker thread is still associated to this instance.
   bool is_valid() const;
 
+  void SetInitiatedFromAndroidScript();
+
  private:
   ~PrinterQuery() override;
 
@@ -81,6 +83,8 @@ class PrinterQuery : public PrintJobWorkerOwner {
   // Is the Print... dialog box currently shown.
   bool is_print_dialog_box_shown_;
 
+  bool is_initiated_from_android_scripted_print_;
+
   // Cookie that make this instance unique.
   int cookie_;