DO NOT MERGE) ExifInterface: Provide backward compatibility

ExifInterface.saveAttribute() didn't throw UnsupportedOperationException
before. Use IOException instead of UnsupportedOperationException for
backward compatibility.

Bug: 30936376, Bug: 32068647, Bug: 31319086
Change-Id: Iacc7b4d91d49edd7bece8f2e738a633a91025eca
diff --git a/media/java/android/media/ExifInterface.java b/media/java/android/media/ExifInterface.java
index d51dbda..532368f 100644
--- a/media/java/android/media/ExifInterface.java
+++ b/media/java/android/media/ExifInterface.java
@@ -1367,8 +1367,7 @@
      */
     public void saveAttributes() throws IOException {
         if (!mIsSupportedFile) {
-            throw new UnsupportedOperationException(
-                    "ExifInterface only supports saving attributes on JPEG formats.");
+            throw new IOException("ExifInterface only supports saving attributes on JPEG formats.");
         }
         // Keep the thumbnail in memory
         mThumbnailBytes = getThumbnail();