Fix the bug that camera can't open again after disconnected
Reproduce steps:
1. Open android default camera
2. Open chrome camera app
3. Close chrome camera app
4. Android camera app is disconnected. Close it.
5. Open android camera app again. It can't open camera anymore.
The root cause is that camera state is set to invalid after getting
an exception in step 4. We should allow opening camera even if
the state is invalid.
BUG=35411023
TEST=In elm, verify that camera can be opened after the above steps
Change-Id: Ie9e64cf826a3510b5fa76b14f7f4110e5a015b64
(cherry picked from commit 5d61737fe19ad69d41d94e2660053e82d0aa3dc5)
2 files changed
