Improve testSetMaxFileSize testcase in MediaRecorderTest

With this patch, MediaRecorder.setMaxFileSize() is tested with a target file size of 512K, provided
a tolerance of +/- 50K. Such a testcase is very useful for MMS use case where the requested
max file size for recording must be observed.

Change-Id: I839b9434d940ba8d005976024f9a2ea166613cc9
1 file changed