Remove duplicate typedef

printing/pdf_metafile_skia.h

Index: printing/pdf_metafile_skia.h
diff --git a/printing/pdf_metafile_skia.h b/printing/pdf_metafile_skia.h
index cd92d6186e7ad3540ea8ef55e53648856c66d65c..aa5acd755bb365979585aabbafdcf8ef6fe4db4a 100644
--- a/printing/pdf_metafile_skia.h
+++ b/printing/pdf_metafile_skia.h
@@ -75,13 +75,13 @@ class PRINTING_EXPORT PdfMetafileSkia : public Metafile {
 
   // This method calls StartPage and then returns an appropriate
   // PlatformCanvas implementation bound to the context created by
-  // StartPage or NULL on error.  The skia::PlatformCanvas pointer that
+  // StartPage or NULL on error.  The SkCanvas pointer that
   // is returned is owned by this PdfMetafileSkia object and does not
   // need to be ref()ed or unref()ed.  The canvas will remain valid
   // until FinishPage() or FinishDocument() is called.
-  skia::PlatformCanvas* GetVectorCanvasForNewPage(const gfx::Size& page_size,
-                                                  const gfx::Rect& content_area,
-                                                  const float& scale_factor);
+  SkCanvas* GetVectorCanvasForNewPage(const gfx::Size& page_size,
+                                      const gfx::Rect& content_area,
+                                      const float& scale_factor);
 
  private:
   scoped_ptr<PdfMetafileSkiaData> data_;