Sungsoo 659275dc30 DO NOT MERGE) ExifInterface: Make saveAttributes throw an exception before change
ExifInterface object can be created with a unsupported file format.
If saveAttribute is called with an unsupported file format, ExifInterface
makes the file corrupted. This CL prevents those cases by throwing
an exception before making any change on the file.

Bug: 30936376
Change-Id: I915f56b00ec9422b53591ac5534e070a1d6798e6
2016-09-08 07:11:04 +00:00
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