Fix the flash mode transition in video mode

onSwitchMode is wrongly overloaded, now is fixed.
Basically, onCurrentDataChanged will handle the switching in and out of Camera.
onDataFullScreenChange will handle full screen change on non-preview data.

bug:10610967

Change-Id: I199a20d40d66b78302e90e0f96826d03076b0e39
8 files changed