VideoCapturerAndroid: Add custom nativeCreateVideoCapturer()

VideoCapturerAndroid: Add custom nativeCreateVideoCapturer()

This CL shouldn't make any functional changes. It adds a new VideoCapturerAndroid.nativeCreateVideoCapturer() instead of always using VideoCapturer.nativeCreateVideoCapturer(). The purpose is to simplify androidvideocapturer_jni and VideoCapturerAndroid.create(). This way, it is possible to use the ctor instead of VideoCapturerAndroid.init() to initialize variables, and they can be made final etc.

R=perkj@webrtc.org

Committed: https://crrev.com/e0bce240652bcf4031ae61985938e968469d3f53
Cr-Commit-Position: refs/heads/master@{#10171}

[magjed_webrtc, 2015-10-02 15:38:28]

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

[magjed_webrtc, 2015-10-05 08:22:39]

Patchset #1 (id:1) has been deleted

[magjed_webrtc, 2015-10-05 08:27:57]

perkj - Please take a look.

[perkj_webrtc, 2015-10-05 11:16:29]

On 2015/10/05 08:27:57, magjed_webrtc wrote:
> perkj - Please take a look.

Nice. 
lgtm

[perkj_webrtc, 2015-10-05 11:16:50]

The CQ bit was checked by perkj@webrtc.org

[commit-bot: I haz the power, 2015-10-05 11:16:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1360173002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1360173002/20001

[commit-bot: I haz the power, 2015-10-05 13:17:13]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-05 13:17:14]

Try jobs failed on following builders:
  android_rel on tryserver.webrtc (JOB_TIMED_OUT, no build URL)

[perkj_webrtc, 2015-10-05 14:22:14]

Committed patchset #1 (id:20001) manually as
e0bce240652bcf4031ae61985938e968469d3f53 (presubmit successful).

[commit-bot: I haz the power, 2015-10-05 14:22:14]

Patchset 1 (id:??) landed as
https://crrev.com/e0bce240652bcf4031ae61985938e968469d3f53
Cr-Commit-Position: refs/heads/master@{#10171}