Adding CreateFromData to NativeMetafileFactory

printing/native_metafile_factory.h

Index: printing/native_metafile_factory.h
diff --git a/printing/native_metafile_factory.h b/printing/native_metafile_factory.h
index b13f17a4708efb5b0359f2e95faecc9a1459157a..30c17823cbe50811e81c2425f6a3fe03d8aa7458 100644
--- a/printing/native_metafile_factory.h
+++ b/printing/native_metafile_factory.h
@@ -17,9 +17,16 @@ namespace printing {
 class NativeMetafileFactory {
  public:
   // This method returns a pointer to the appropriate NativeMetafile object
-  // according to the platform.
+  // according to the platform. The metafile is already initialized by invoking
+  // Init() on it.
   static printing::NativeMetafile* Create();
 
+  // This method returns a pointer to the appropriate NativeMetafile object
+  // according to the platform. The metafile is already initialized by invoking
+  // Init(src_buffer,_buffer_size) on it.
+  static printing::NativeMetafile* CreateFromData(const void* src_buffer,
+                                                  uint32 src_buffer_size);
+
  private:
   NativeMetafileFactory();
   DISALLOW_COPY_AND_ASSIGN(NativeMetafileFactory);