Fixing spreadsheets printing.

chrome/renderer/printing/print_web_view_helper.h

Index: chrome/renderer/printing/print_web_view_helper.h
diff --git a/chrome/renderer/printing/print_web_view_helper.h b/chrome/renderer/printing/print_web_view_helper.h
index d10db9792522392b6314f7dda406db298532bf59..56d1ecdc6584b8cd90dbfde1e505272cfe6cc076 100644
--- a/chrome/renderer/printing/print_web_view_helper.h
+++ b/chrome/renderer/printing/print_web_view_helper.h
@@ -10,6 +10,7 @@
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
+#include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "content/public/renderer/render_view_observer_tracker.h"
@@ -60,7 +61,8 @@ class FrameReference {
 // of the document and creating a new WebView with the contents.
 class PrintWebViewHelper
     : public content::RenderViewObserver,
-      public content::RenderViewObserverTracker<PrintWebViewHelper> {
+      public content::RenderViewObserverTracker<PrintWebViewHelper>,
+      public base::SupportsWeakPtr<PrintWebViewHelper> {
  public:
   explicit PrintWebViewHelper(content::RenderView* render_view);
   virtual ~PrintWebViewHelper();
@@ -112,6 +114,8 @@ class PrintWebViewHelper
   // RenderViewObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void PrintPage(WebKit::WebFrame* frame, bool user_initiated) OVERRIDE;
+  virtual void DidStartLoading() OVERRIDE;
+  virtual void DidStopLoading() OVERRIDE;
 
   // Message handlers ---------------------------------------------------------
 
@@ -326,6 +330,9 @@ class PrintWebViewHelper
   // Scripted printing will be blocked for a limited amount of time.
   void IncrementScriptedPrintCount();
 
+  // Shows scripted print preview when options from plugin are availible.
+  void ShowScriptedPrintPreview();
+
   void RequestPrintPreview(PrintPreviewRequestType type);
 
   // Checks whether print preview should continue or not.
@@ -478,6 +485,8 @@ class PrintWebViewHelper
 
   bool print_node_in_progress_;
   PrintPreviewContext print_preview_context_;
+  bool is_loading_;
+  bool is_scripted_preview_delayed_;
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };