AppFuse is now a public API. The CL removes the private version from
MtpDocuemntsProvider package and switches to the public version.
Bug: 32891253
Test: MtpDocumentsProviderTest
Change-Id: Ibdf67309bc0678e2f70ac2dddb920125d9e0760e
Previously we have two AppFuseTest class in the normal test and the perf
test. The CL renames the one in the perf test to different name.
Bug: 31982374
Test: adb shell am instrument -w com.android.mtp.perftests/android.support.test.runner.AndroidJUnitRunner
Change-Id: I6272d7f78cead0bfeee7cf83ed50c77658caa1c0
The perforamnce test read from/write to 10MB data to AppFuse file 100
times.
Test: adb shell am instrument -w com.android.mtp.perftests/android.support.test.runner.AndroidJUnitRunner
Bug: 31982374
Change-Id: I8f78ee43d8078d7f1098249b28491cb43b5f3bef
