Print headers and footers with WebKit.

chrome/renderer/print_web_view_helper.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 
 #include <vector>
 
 #include "base/gtest_prod_util.h"
@@ skipping 274 matching lines @@
                   WebKit::WebFrame* frame, bool is_preview,
                   printing::Metafile* metafile, gfx::Size* page_size,
                   gfx::Rect* content_rect);
 #elif defined(OS_POSIX)
   bool RenderPages(const PrintMsg_PrintPages_Params& params,
                    WebKit::WebFrame* frame, const WebKit::WebNode& node,
                    int* page_count, PrepareFrameAndViewForPrint* prepare,
                    printing::Metafile* metafile);
 #endif  // defined(OS_WIN)
 
+  // Renders page contents from |frame| to |content_area| of |canvas|.
+  // |page_number| is zero-based.
+  // When method is called, canvas should be setup to draw to |canvas_area|
+  // with |scale_factor|.
+  static float RenderPageContent(WebKit::WebFrame* frame,
+                                 int page_number,
+                                 const gfx::Rect& canvas_area,
+                                 const gfx::Rect& content_area,
+                                 double scale_factor,
+                                 WebKit::WebCanvas* canvas);
+
   // Helper methods -----------------------------------------------------------
 
   bool CopyAndPrint(WebKit::WebFrame* web_frame);
 
   bool CopyMetafileDataToSharedMem(printing::Metafile* metafile,
                                    base::SharedMemoryHandle* shared_mem_handle);
 
   // Helper method to get page layout in points and fit to page if needed.
   static void ComputePageLayoutInPointsForCss(
       WebKit::WebFrame* frame,
@@ skipping 182 matching lines @@
 
     State state_;
   };
 
   bool print_node_in_progress_;
   PrintPreviewContext print_preview_context_;
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_