Fix back button behaviour

bug:7290000
bug:7256201
Change-Id: Ia6f5726b0602c45e98566bcb5e027686e7f2fe57
10 files changed
tree: 31c23b629d0fa8b7beacddb58611514af4b026aa
  1. gallerycommon/
  2. src/
  3. src_pd/
  4. tests/