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 8b4342dd672b34fe99e3235123da0f9b630870fc..6710ce12e01b93862a6e2a352e912d5c7da6a11a 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..
@@ -214,6 +219,7 @@ class PrintWebViewHelper : public RenderViewObserver,
   void PrintPageInternal(const PrintMsg_PrintPage_Params& params,
                          const gfx::Size& canvas_size,
                          WebKit::WebFrame* frame,
+                         bool is_preview,
                          printing::Metafile* metafile);
 #else
   void PrintPageInternal(const PrintMsg_PrintPage_Params& params,
@@ -234,7 +240,8 @@ class PrintWebViewHelper : public RenderViewObserver,
 #elif defined(OS_MACOSX)
   void RenderPage(const gfx::Size& page_size, const gfx::Rect& content_area,
                   const float& scale_factor, int page_number, int page_slot,
-                  WebKit::WebFrame* frame, printing::Metafile* metafile);
+                  WebKit::WebFrame* frame, bool is_preview,
+                  printing::Metafile* metafile);
 #elif defined(OS_POSIX)
   bool RenderPages(const PrintMsg_PrintPages_Params& params,
                    WebKit::WebFrame* frame, WebKit::WebNode* node,
@@ -289,6 +296,18 @@ class PrintWebViewHelper : public RenderViewObserver,
   // for pending preview requests.
   void PreviewPageRendered(int page_number, printing::Metafile* metafile);
 
+  // Given the |device| and |canvas| to draw on, prints the appropriate headers
+  // and footers using strings from |header_footer_info| on to the canvas.

[kmadhusu, 2011/07/28 20:31:20]

Add comments after #defined(USE_SKIA)

[Aayush Kumar, 2011/07/29 00:21:46]

Done.

+#if defined(USE_SKIA)
+  void PrintHeaderAndFooter(SkDevice* device,

[kmadhusu, 2011/07/28 20:31:20]

Add the "static" keyword to the function signature.

[Aayush Kumar, 2011/07/29 00:21:46]

Done.

+                            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
+
   WebKit::WebView* print_web_view_;
 
   scoped_ptr<PrintMsg_PrintPages_Params> print_pages_params_;
@@ -304,6 +323,10 @@ 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: