Re-add SurfaceTexture as member for setLocalPreview in VideoCapturerAndroid.

Re-add SurfaceTexture as member for setLocalPreview in VideoCapturerAndroid.
The Android camera api requires a surface to be set in order work. In https://codereview.webrtc.org/1354683004/ this surfaceTexture was removed as a member but it turns out that can lead to camera freezes when the device is rotated. This cl re-adds the surface as a member.

BUG=webrtc:5021, webrtc:5003
R=magjed@webrtc.org

Committed: https://chromium.googlesource.com/external/webrtc/+/e6d3adab087281c24076a534b1c82e47e60153bd

[perkj_webrtc, 2015-09-21 11:45:21]

perkj@webrtc.org changed reviewers:
+ magjed@webrtc.org

[perkj_webrtc, 2015-09-21 11:45:22]

Please?

[magjed_webrtc, 2015-09-21 11:55:32]

lgtm

https://codereview.webrtc.org/1349433003/diff/1/talk/app/webrtc/java/android/...
File talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java (right):

https://codereview.webrtc.org/1349433003/diff/1/talk/app/webrtc/java/android/...
talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java:80: private
SurfaceTexture cameraSurfaceTexture;
This is very strange. I hope we are not missing a fundamental problem and this
is just a workaround.

[perkj_webrtc, 2015-09-21 11:58:00]

Committed patchset #1 (id:1) manually as
e6d3adab087281c24076a534b1c82e47e60153bd (presubmit successful).

[commit-bot: I haz the power, 2015-09-21 11:58:01]

Patchset 1 (id:??) landed as
https://crrev.com/e6d3adab087281c24076a534b1c82e47e60153bd
Cr-Commit-Position: refs/heads/master@{#9999}