Use GL_OES_EGL_image_external_essl3 in kExternalRgbaTextureFragmentShader

GL_OES_EGL_image_external support for GLSL 3 is undefined.

Bug: 342086203
Test: atest virtual_camera_tests
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:c06aeb2ddb11c9adb7995b563222d804971c2860)
Merged-In: Id1d68508b366a2f9e368a1ce6fd0f2591e4fed88
Change-Id: Id1d68508b366a2f9e368a1ce6fd0f2591e4fed88
1 file changed