Revert of AppRTCDemo: Render each video in a separate SurfaceView

Revert of AppRTCDemo: Render each video in a separate SurfaceView (patchset #4 id:120001 of https://codereview.webrtc.org/1257043004/ )

Reason for revert:
AppRTCDemo often crashes in loopback mode and incorrect layout when connection is established

BUG=webrtc:4909, webrtc:4910
Original issue's description:
> AppRTCDemo: Render each video in a separate SurfaceView
>
> This CL introduces a new org.webrtc.VideoRenderer.Callbacks implementation called SurfaceViewRenderer that renders each video stream in its own SurfaceView. AppRTCDemo is updated to use this new rendering.
>
> This CL also does the following changes:
> * Make the VideoRenderer.Callbacks interface asynchronous and require that renderFrameDone() is called for every renderFrame(). In JNI, this is implemented with cricket::VideoFrame::Copy()/delete.
> * Make public static helper functions: convertScalingTypeToVisibleFraction(), getDisplaySize(), and getTextureMatrix().
> * Introduces new helper functions surfaceWidth()/surfaceHeight() in EGlBase that allows to query the surface size.
> * Introduce PercentFrameLayout that implements the percentage layout that is used by AppRTCDemo.
>
> BUG=webrtc:4742
>
> Committed: https://crrev.com/05bfbe47ef6bcc9ca731c0fa0d5cd15a4f21e93f
> Cr-Commit-Position: refs/heads/master@{#9699}

TBR=glaznev@webrtc.org,wzh@webrtc.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4742
Committed: https://crrev.com/e2a8be124458d77d0d3f30a8e33e0a1eede4a849
Cr-Commit-Position: refs/heads/master@{#9703}

[magjed_webrtc, 2015-08-12 06:53:52]

Created Revert of AppRTCDemo: Render each video in a separate SurfaceView

[magjed_webrtc, 2015-08-12 06:54:48]

The CQ bit was checked by magjed@webrtc.org

[commit-bot: I haz the power, 2015-08-12 06:54:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1286133002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1286133002/1

[commit-bot: I haz the power, 2015-08-12 06:55:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-12 06:55:14]

Patchset 1 (id:??) landed as
https://crrev.com/e2a8be124458d77d0d3f30a8e33e0a1eede4a849
Cr-Commit-Position: refs/heads/master@{#9703}