Cancel prerenders for pages that call window.print()

chrome/browser/chrome_content_browser_client.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/chrome_content_browser_client.h"
 
 #include "base/command_line.h"
 #include "chrome/app/breakpad_mac.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/character_encoding.h"
 #include "chrome/browser/chrome_worker_message_filter.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/debugger/devtools_handler.h"
 #include "chrome/browser/desktop_notification_handler.h"
 #include "chrome/browser/extensions/extension_message_handler.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/prerender/prerender_message_filter.h"
 #include "chrome/browser/printing/printing_message_filter.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/browser/renderer_host/chrome_render_message_filter.h"
 #include "chrome/browser/renderer_host/chrome_render_view_host_observer.h"
 #include "chrome/browser/renderer_host/text_input_client_message_filter.h"
 #include "chrome/browser/search_engines/search_provider_install_state_message_filter.h"
 #include "chrome/browser/spellcheck_message_filter.h"
 #include "chrome/browser/ui/webui/chrome_web_ui_factory.h"
 #include "chrome/common/child_process_logging.h"
@@ skipping 89 matching lines @@
 
   InitRenderViewHostForExtensions(render_view_host);
 }
 
 void ChromeContentBrowserClient::BrowserRenderProcessHostCreated(
     BrowserRenderProcessHost* host) {
   int id = host->id();
   Profile* profile = host->profile();
   host->channel()->AddFilter(new ChromeRenderMessageFilter(
       id, profile, profile->GetRequestContextForRenderProcess(id)));
+  // Add the PrerenderMessageFilter before the PrintingMessageFilter to
+  // intercept PrintHostMsg_ messages.
+  host->channel()->AddFilter(new prerender::PrerenderMessageFilter(
+      host, profile->GetPrerenderManager()));
   host->channel()->AddFilter(new PrintingMessageFilter());
   host->channel()->AddFilter(
       new SearchProviderInstallStateMessageFilter(id, profile));
   host->channel()->AddFilter(new SpellCheckMessageFilter(id));
 #if defined(OS_MACOSX)
   host->channel()->AddFilter(new TextInputClientMessageFilter(host->id()));
 #endif
 }
 
 void ChromeContentBrowserClient::WorkerProcessHostCreated(
@@ skipping 202 matching lines @@
     return PpapiCrashHandlerHostLinux::GetInstance()->GetDeathSignalSocket();
 
   if (process_type == switches::kGpuProcess)
     return GpuCrashHandlerHostLinux::GetInstance()->GetDeathSignalSocket();
 
   return -1;
 }
 #endif
 
 }  // namespace chrome