Added Header and Footer support using Skia

chrome/renderer/print_web_view_helper.h

Index: chrome/renderer/print_web_view_helper.h
diff --git a/chrome/renderer/print_web_view_helper.h b/chrome/renderer/print_web_view_helper.h
index 4606c3716217f3d8db447e0272f6be95999e3217..313f06d8e58c23a230c4d404637538c4a6f0874b 100644
--- a/chrome/renderer/print_web_view_helper.h
+++ b/chrome/renderer/print_web_view_helper.h
@@ -27,6 +27,11 @@ struct PrintMsg_PrintPages_Params;
 namespace base {
 class DictionaryValue;
 }
+#if defined(USE_SKIA)
+namespace skia {
+class VectorCanvas;
+}
+#endif
 
 // Class that calls the Begin and End print functions on the frame and changes
 // the size of the view temporarily to support full page printing..
@@ -260,6 +265,19 @@ class PrintWebViewHelper : public RenderViewObserver,
       PrepareFrameAndViewForPrint* prepare,
       PrintMsg_Print_Params* params);
 
+#if defined(USE_SKIA)
+  // Given the |device| and |canvas| to draw on, prints the appropriate headers
+  // and footers using strings from |header_footer_info| on to the canvas.
+  static void PrintHeaderAndFooter(
+      SkDevice* device,
+      skia::VectorCanvas* canvas,
+      int page_number,
+      int total_pages,
+      float webkit_scale_factor,
+      const PageSizeMargins& page_layout_in_points,
+      const base::DictionaryValue& header_footer_info);
+#endif  // USE_SKIA
+
   bool GetPrintFrame(WebKit::WebFrame** frame);
 
   // This reports the current time - |start_time| as the time to render a page.
@@ -303,6 +321,10 @@ class PrintWebViewHelper : public RenderViewObserver,
 
   scoped_ptr<PrintMsg_PrintPages_Params> old_print_pages_params_;
 
+  // Contains strings generated by the browser process to be printed as headers
+  // and footers if requested by the user.
+  scoped_ptr<base::DictionaryValue> header_footer_info_;
+
   // Keeps track of the state of print preview between messages.
   class PrintPreviewContext {
    public: