Cancel prerenders for pages that call window.print()

chrome/browser/prerender/prerender_render_view_host_observer.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/prerender/prerender_render_view_host_observer.h"
 
 #include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/common/icon_messages.h"
 #include "chrome/common/render_messages.h"
 #include "content/common/view_messages.h"
@@ skipping 23 matching lines @@
   IPC_BEGIN_MESSAGE_MAP(PrerenderRenderViewHostObserver, message)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidStartProvisionalLoadForFrame,
                         OnDidStartProvisionalLoadForFrame)
     IPC_MESSAGE_HANDLER(IconHostMsg_UpdateFaviconURL, OnUpdateFaviconURL)
     IPC_MESSAGE_HANDLER(ViewHostMsg_MaybeCancelPrerenderForHTML5Media,
                         OnMaybeCancelPrerenderForHTML5Media)
     IPC_MESSAGE_HANDLER(ViewHostMsg_JSOutOfMemory, OnJSOutOfMemory)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RunJavaScriptMessage,
                         OnRunJavaScriptMessage)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RenderViewGone, OnRenderViewGone)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_CancelPrerenderForPrinting,
+                        OnCancelPrerenderForPrinting)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   // Pass the message through.
   if (!handled)
     handled = RenderViewHostObserver::OnMessageReceived(message);
 
   return handled;
 }
 
@@ skipping 36 matching lines @@
                                                          url);
 }
 
 void PrerenderRenderViewHostObserver::OnUpdateFaviconURL(
     int32 page_id,
     const std::vector<FaviconURL>& urls) {
   prerender_contents_->OnUpdateFaviconURL(page_id, urls);
 }
 
 void PrerenderRenderViewHostObserver::OnMaybeCancelPrerenderForHTML5Media() {
-  prerender_contents_->OnMaybeCancelPrerenderForHTML5Media();
+  prerender_contents_->Destroy(FINAL_STATUS_HTML5_MEDIA);
+}
+
+void PrerenderRenderViewHostObserver::OnCancelPrerenderForPrinting() {
+  prerender_contents_->Destroy(FINAL_STATUS_WINDOW_PRINT);
 }
 
 }