Block scripted printing.

chrome/renderer/print_web_view_helper.cc

Index: chrome/renderer/print_web_view_helper.cc
===================================================================
--- chrome/renderer/print_web_view_helper.cc	(revision 127745)
+++ chrome/renderer/print_web_view_helper.cc	(working copy)
@@ -657,11 +657,19 @@
       ignore_css_margins_(false),
       fit_to_page_(true),
       user_cancelled_scripted_print_count_(0),
+      is_scripted_printing_blocked_(false),
       notify_browser_of_print_failure_(true) {
 }
 
 PrintWebViewHelper::~PrintWebViewHelper() {}
 
+bool PrintWebViewHelper::IsScriptInitiatedPrintAllowed(
+    WebKit::WebFrame* frame) {
+  if (is_scripted_printing_blocked_)
+    return false;
+  return !IsScriptInitiatedPrintTooFrequent(frame);
+}
+
 // Prints |frame| which called window.print().
 void PrintWebViewHelper::PrintPage(WebKit::WebFrame* frame) {
   DCHECK(frame);
@@ -672,7 +680,7 @@
     return;
   }
 
-  if (IsScriptInitiatedPrintTooFrequent(frame))
+  if (!IsScriptInitiatedPrintAllowed(frame))
     return;
   IncrementScriptedPrintCount();
 
@@ -699,6 +707,8 @@
                         ResetScriptedPrintCount)
     IPC_MESSAGE_HANDLER(PrintMsg_PreviewPrintingRequestCancelled,
                         DisplayPrintJobError)
+    IPC_MESSAGE_HANDLER(PrintMsg_SetScriptedPrintingBlocked,
+                        SetScriptedPrintBlocked)
     IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
   return handled;
@@ -976,6 +986,10 @@
   DidFinishPrinting(success ? OK : FAIL_PRINT);
 }
 
+void PrintWebViewHelper::SetScriptedPrintBlocked(bool blocked) {
+  is_scripted_printing_blocked_ = blocked;
+}
+
 void PrintWebViewHelper::OnPrintNodeUnderContextMenu() {
   const WebNode& context_menu_node = render_view()->GetContextMenuNode();
   PrintNode(context_menu_node);