Deprecate more old filepath functions.

printing/image.h

Index: printing/image.h
diff --git a/printing/image.h b/printing/image.h
index ed2820ba4df34fff2370e3138ee9e497bb876309..5f4746daf3959c82c980d4535c7e1e6da1524db9 100644
--- a/printing/image.h
+++ b/printing/image.h
@@ -9,21 +9,22 @@
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/file_path.h"
 #include "base/logging.h"
 #include "gfx/size.h"
 #include "printing/native_metafile.h"
 
+class FilePath;
+
 namespace printing {
 
 // Lightweight raw-bitmap management. The image, once initialized, is immutable.
 // The main purpose is testing image contents.
 class Image {
  public:
-  // Creates the image from the given filename on disk.  Uses extension to
+  // Creates the image from the given file on disk.  Uses extension to
   // defer file type. PNG and EMF (on Windows) currently supported.
   // If image loading fails size().IsEmpty() will be true.
-  explicit Image(const std::wstring& filename);
+  explicit Image(const FilePath& path);
 
   // Creates the image from the metafile.  Deduces bounds based on bounds in
   // metafile.  If loading fails size().IsEmpty() will be true.