Android: Expose underlying EGL context in API

This CL adds a way to extract the underlying android.opengl.EGLContext
and javax.microedition.khronos.egl.EGLContext for EglBase14 and
EglBase10 respectively. The reason is that clients can't be expected to
use only WebRTC's OpenGL code and might need to integrate with their
own GL code.

Bug: None
Change-Id: Ie00a564de45a090683542a52005da7e43c586ced
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/127888
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27205}
diff --git a/sdk/android/BUILD.gn b/sdk/android/BUILD.gn
index d8b1302..4111fcd 100644
--- a/sdk/android/BUILD.gn
+++ b/sdk/android/BUILD.gn
@@ -247,6 +247,8 @@
   rtc_android_library("video_java") {
     java_files = [
       "api/org/webrtc/EglBase.java",
+      "api/org/webrtc/EglBase10.java",
+      "api/org/webrtc/EglBase14.java",
       "api/org/webrtc/EglRenderer.java",
       "api/org/webrtc/GlRectDrawer.java",
       "api/org/webrtc/GlShader.java",
@@ -263,8 +265,8 @@
       "api/org/webrtc/YuvConverter.java",
       "api/org/webrtc/YuvHelper.java",
       "api/org/webrtc/TimestampAligner.java",
-      "src/java/org/webrtc/EglBase10.java",
-      "src/java/org/webrtc/EglBase14.java",
+      "src/java/org/webrtc/EglBase10Impl.java",
+      "src/java/org/webrtc/EglBase14Impl.java",
       "src/java/org/webrtc/GlGenericDrawer.java",
       "src/java/org/webrtc/H264Utils.java",
       "src/java/org/webrtc/NV21Buffer.java",