Added Header and Footer support using Skia

chrome/browser/ui/webui/print_preview_handler.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/ui/webui/print_preview_handler.h"
 
 #include <string>
 
 #include "base/base64.h"
 #if !defined(OS_CHROMEOS)
@@ skipping 471 matching lines @@
 
   TabContents* initiator_tab = GetInitiatorTab();
   if (!initiator_tab) {
     if (!reported_failed_preview_) {
       ReportUserActionHistogram(PREVIEW_FAILED);
       reported_failed_preview_ = true;
     }
     print_preview_ui->OnPrintPreviewFailed();
     return;
   }
+
+  // Retrieve the page title and url and send it to the renderer process if
+  // headers and footers are to be displayed.
+  bool display_header_footer;

[Lei Zhang, 2011/08/03 01:28:31]

If you don't initialize |display_header_footer|, you may get nondeterministic
behavior in release builds if you ever hit the NOTREACHED().

[Aayush Kumar, 2011/08/03 15:52:54]

Done.

+  if (!settings->GetBoolean(printing::kSettingHeaderFooter,
+                            &display_header_footer)) {
+    NOTREACHED();
+  }
+  if (display_header_footer) {
+    settings->SetString(printing::kSettingHeaderFooterTitle,
+                        initiator_tab->GetTitle());
+    std::string url;
+    NavigationEntry* entry = initiator_tab->controller().GetActiveEntry();
+    if (entry)
+      url = entry->virtual_url().spec();
+    settings->SetString(printing::kSettingHeaderFooterURL, url);
+  }
+
   VLOG(1) << "Print preview request start";
   RenderViewHost* rvh = initiator_tab->render_view_host();
   rvh->Send(new PrintMsg_PrintPreview(rvh->routing_id(), *settings));
 }
 
 void PrintPreviewHandler::HandlePrint(const ListValue* args) {
   ReportStats();
 
   // Record the number of times the user requests to regenerate preview data
   // before printing.
@@ skipping 384 matching lines @@
     return;
 
   // We no longer require the initiator tab details. Remove those details
   // associated with the preview tab to allow the initiator tab to create
   // another preview tab.
   printing::PrintPreviewTabController* tab_controller =
      printing::PrintPreviewTabController::GetInstance();
   if (tab_controller)
     tab_controller->EraseInitiatorTabInfo(preview_tab());
 }