Support video/mp4 content type
Support video/mp4 content type

Change-Id: I388e6066b05872993c3f15167d2250d7732c6d8f
Signed-off-by: Sang-Jun Park <48af3fcee97809d2e5d87e901317ce8fb7d71250@samsung.com>

bmaupin/android-sms-plus