Move metafile printing code from platform canvas to PaintCanvas

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 558531afa3fb776a2feafe42556e6cfb4960cdde..b18b86c66c89bbeed174de3c585b6db3dd99a866 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -1835,10 +1835,10 @@ void PepperPluginInstanceImpl::PrintPage(int page_number,
   page_range.first_page_number = page_range.last_page_number = page_number;
   // The canvas only has a metafile on it for print preview.
   printing::PdfMetafileSkia* metafile =
-      printing::MetafileSkiaWrapper::GetMetafileFromCanvas(*canvas);
+      printing::MetafileSkiaWrapper::GetMetafileFromCanvas(canvas);
   bool save_for_later = (metafile != NULL);
 #if defined(OS_MACOSX)
-  save_for_later = save_for_later && skia::IsPreviewMetafile(*canvas);
+  save_for_later = save_for_later && cc::IsPreviewMetafile(canvas);
 #endif  // defined(OS_MACOSX)
   if (save_for_later) {
     ranges_.push_back(page_range);