Added Header and Footer support using Skia

chrome/renderer/print_web_view_helper_linux.cc

Index: chrome/renderer/print_web_view_helper_linux.cc
diff --git a/chrome/renderer/print_web_view_helper_linux.cc b/chrome/renderer/print_web_view_helper_linux.cc
index 6910086c1faecada3d36b464619a833e2ac21969..ee6fd1a39d857ac87e7fb6aa0ca9d66f3a1c8f00 100644
--- a/chrome/renderer/print_web_view_helper_linux.cc
+++ b/chrome/renderer/print_web_view_helper_linux.cc
@@ -14,6 +14,7 @@
 #include "printing/metafile_impl.h"
 #include "printing/metafile_skia_wrapper.h"
 #include "skia/ext/vector_canvas.h"
+#include "skia/ext/vector_platform_device_skia.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "ui/gfx/point.h"
@@ -34,7 +35,8 @@ void PrintWebViewHelper::RenderPreviewPage(int page_number) {
   PrintPageInternal(page_params,
                     print_preview_context_.GetPrintCanvasSize(),
                     print_preview_context_.frame(),
-                    print_preview_context_.metafile());
+                    print_preview_context_.metafile(),
+                    true);
   print_preview_context_.RenderedPreviewPage(
       base::TimeTicks::Now() - begin_time);
   PreviewPageRendered(page_number);
@@ -148,12 +150,12 @@ bool PrintWebViewHelper::RenderPages(const PrintMsg_PrintPages_Params& params,
   if (params.pages.empty()) {
     for (int i = 0; i < *page_count; ++i) {
       page_params.page_number = i;
-      PrintPageInternal(page_params, canvas_size, frame, metafile);
+      PrintPageInternal(page_params, canvas_size, frame, metafile, false);
     }
   } else {
     for (size_t i = 0; i < params.pages.size(); ++i) {
       page_params.page_number = params.pages[i];
-      PrintPageInternal(page_params, canvas_size, frame, metafile);
+      PrintPageInternal(page_params, canvas_size, frame, metafile, false);
     }
   }
 
@@ -168,7 +170,8 @@ void PrintWebViewHelper::PrintPageInternal(
     const PrintMsg_PrintPage_Params& params,
     const gfx::Size& canvas_size,
     WebFrame* frame,
-    printing::Metafile* metafile) {
+    printing::Metafile* metafile,
+    bool is_preview) {
   PageSizeMargins page_layout_in_points;
   GetPageSizeAndMarginsInPoints(frame, params.page_number, params.params,
                                 &page_layout_in_points);
@@ -197,7 +200,14 @@ void PrintWebViewHelper::PrintPageInternal(
   printing::MetafileSkiaWrapper::SetMetafileOnCanvas(canvas.get(), metafile);
   frame->printPage(params.page_number, canvas.get());
 
-  // TODO(myhuang): We should render the header and the footer.
+  if (is_preview && params.params.display_header_footer) {
+    // |page_number| is 0-based, so 1 is added.
+    // The scale factor on Linux is 1.
+    PrintHeaderAndFooter(static_cast<skia::VectorPlatformDeviceSkia*>(device),
+                         canvas, params.page_number + 1,
+                         print_preview_context_.total_page_count(), 1,
+                         page_layout_in_points, header_footer_info_);
+  }
 
   // Done printing. Close the device context to retrieve the compiled metafile.
   if (!metafile->FinishPage())