Return EGL_NO_CONTEXT instead of throwing an exception.
Return EGL_NO_CONTEXT instead of throwing an exception.

Changes EglBase10.Context.getNativeEglContext to return EGL_NO_CONTEXT
instead of throwing a runtime exception.

Bug: webrtc:8257
Change-Id: I89fe630ada35d247f3a6c00b0cd2d7f0b445afa3
Reviewed-on: https://webrtc-review.googlesource.com/3260
Commit-Queue: Sami Kalliomäki <b9debeb8943b89663e00c95863751401cba91c9a@webrtc.org>
Reviewed-by: Magnus Jedvert <9507adee858471ab168c339dc72b814b168c081b@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#19953}
ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc