use SkStream::NewFromFile()



git-svn-id: http://skia.googlecode.com/svn/trunk@8210 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/images/SkImageDecoder.cpp b/src/images/SkImageDecoder.cpp
index 3999dcc..c16efcf 100644
--- a/src/images/SkImageDecoder.cpp
+++ b/src/images/SkImageDecoder.cpp
@@ -225,9 +225,9 @@
     SkASSERT(file);
     SkASSERT(bm);
 
-    SkFILEStream    stream(file);
-    if (stream.isValid()) {
-        if (SkImageDecoder::DecodeStream(&stream, bm, pref, mode, format)) {
+    SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(file));
+    if (stream.get()) {
+        if (SkImageDecoder::DecodeStream(stream, bm, pref, mode, format)) {
             bm->pixelRef()->setURI(file);
             return true;
         }