Print Preview: Hook up the print button to initiate a normal print operation....

chrome/renderer/render_view.cc

Index: chrome/renderer/render_view.cc
===================================================================
--- chrome/renderer/render_view.cc	(revision 74317)
+++ chrome/renderer/render_view.cc	(working copy)
@@ -976,6 +976,8 @@
     IPC_MESSAGE_HANDLER(ViewMsg_PrintPreview, OnPrintPreview)
     IPC_MESSAGE_HANDLER(ViewMsg_PrintNodeUnderContextMenu,
                         OnPrintNodeUnderContextMenu)
+    IPC_MESSAGE_HANDLER(ViewMsg_PrintForPrintPreview,
+                        OnPrintForPrintPreview)
     IPC_MESSAGE_HANDLER(ViewMsg_Navigate, OnNavigate)
     IPC_MESSAGE_HANDLER(ViewMsg_Stop, OnStop)
     IPC_MESSAGE_HANDLER(ViewMsg_ReloadFrame, OnReloadFrame)
@@ -1180,6 +1182,23 @@
   GetPrintWebViewHelper()->PrintNode(&context_menu_node, false, false);
 }
 
+void RenderView::OnPrintForPrintPreview() {
+  WebFrame* main_frame = webview() ? webview()->mainFrame() : NULL;
+  if (!main_frame)
+    return;
+
+  WebDocument document = main_frame->document();
+  // <object> with id="pdf-viewer" is created in
+  // chrome/browser/resources/print_preview.js
+  WebElement element = document.getElementById("pdf-viewer");
+  if (element.isNull()) {
+    NOTREACHED();
+    return;
+  }
+
+  GetPrintWebViewHelper()->PrintNode(&element, false, false);
+}
+
 void RenderView::CapturePageInfo(int load_id, bool preliminary_capture) {
   if (load_id != page_id_)
     return;  // this capture call is no longer relevant due to navigation