Unifying NativeMetafile class interface (as much as possible) for Linux, Mac, Win

chrome/plugin/webplugin_delegate_stub.cc

Index: chrome/plugin/webplugin_delegate_stub.cc
diff --git a/chrome/plugin/webplugin_delegate_stub.cc b/chrome/plugin/webplugin_delegate_stub.cc
index 0624e3e16a06d31016328f7115bd2116912992d9..2a0d8e7bd9d53f41ca1b84c5a19d587b3d3bd22d 100644
--- a/chrome/plugin/webplugin_delegate_stub.cc
+++ b/chrome/plugin/webplugin_delegate_stub.cc
@@ -277,10 +277,10 @@ void WebPluginDelegateStub::OnPrint(base::SharedMemoryHandle* shared_memory,
     NOTREACHED();
     return;
   }
-  HDC hdc = metafile->hdc();
+  HDC hdc = metafile->context();
   skia::PlatformDevice::InitializeDC(hdc);
   delegate_->Print(hdc);
-  if (!metafile->CloseDc()) {
+  if (!metafile->Close()) {
     NOTREACHED();
     return;
   }