Print Preview: Handle a crashed initiator tab by showing a message in PP.

chrome/browser/ui/webui/print_preview_ui.h

Index: chrome/browser/ui/webui/print_preview_ui.h
diff --git a/chrome/browser/ui/webui/print_preview_ui.h b/chrome/browser/ui/webui/print_preview_ui.h
index 8492e8534f8c8039c44181cb0473b67f98e6cadc..1d89485163a61b6d1bdc2730b425a54cbae32046 100644
--- a/chrome/browser/ui/webui/print_preview_ui.h
+++ b/chrome/browser/ui/webui/print_preview_ui.h
@@ -37,6 +37,9 @@ class PrintPreviewUI : public ChromeWebUI {
   // Clear the existing print preview data.
   void ClearAllPreviewData();
 
+  // Setters
+  void SetInitiatorTabURL(const std::string& initiator_url);
+
   // Notifies the Web UI that there is a print preview request. There should be
   // a matching call to OnPreviewDataIsAvailable() or OnPrintPreviewFailed().
   void OnPrintPreviewRequest();
@@ -62,7 +65,7 @@ class PrintPreviewUI : public ChromeWebUI {
   // Notifies the Web UI that a navigation has occurred in this tab. This is the

[Lei Zhang, 2011/08/16 00:59:23]

This comment is out of date.

[kmadhusu, 2011/08/16 01:31:37]

Fixed.

   // last chance to communicate with the source tab before the association is
   // erased.
-  void OnNavigation();
+  void OnTabDestroyed();
 
   // Notifies the Web UI that the print preview failed to render.
   void OnPrintPreviewFailed();
@@ -72,7 +75,10 @@ class PrintPreviewUI : public ChromeWebUI {
 
   // Notifies the Web UI that initiator tab is closed, so we can disable all the
   // controls that need the initiator tab for generating the preview data.
-  void OnInitiatorTabClosed(const std::string& initiator_url);
+  void OnInitiatorTabClosed();
+
+  // Notifies the Web UI that the initiator tab has crashed.
+  void OnInitiatorTabCrashed();
 
   // Notifies the Web UI renderer that file selection has been cancelled.
   void OnFileSelectionCancelled();
@@ -102,6 +108,10 @@ class PrintPreviewUI : public ChromeWebUI {
   // Document cookie from the initiator renderer.
   int document_cookie_;
 
+  // Store the |initiator_url| in order to display an accurate error message
+  // when the initiator tab is closed/crashed.
+  std::string initiator_url_;
+
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewUI);
 };