Conditionally expose EGL_ANDROID_get_frame_timestamps extension

Expose EGL_ANDROID_get_frame_timestamps extension
if service.sf.present_timestamp sysprop is true, and
we use ANGLE egl.

On cuttlefish we disabled service.sf.present_timestamp,
this further disables VK_GOOGLE_display_timing extension.
ANGLE's eglSurfaceAttrib(EGL_TIMESTAMPS_ANDROID) requires
both EGL_ANDROID_get_frame_timestamps and
VK_GOOGLE_display_timing extension to work:
https://chromium-review.googlesource.com/c/angle/angle/+/3753396.
Android EGL Wrapper's eglSurfaceAttrib() implementation
forwards the call to ANGLE. Therefore, we need to make ANGLE
and Android EGL Wrapper report consistent results:
only expose EGL_ANDROID_get_frame_timestamps in Android
EGL Wrapper if service.sf.present_timestamp sysprop is true.
That way we won't have Android EGL Wrapper claiming the
EGL_ANDROID_get_frame_timestamps extension
is supported first, but then the subsequent call of
eglSurfaceAttrib(EGL_TIMESTAMPS_ANDROID) to ANGLE fails.

Bug: b/269060366
Test: m;
cts-tradefed run commandAndExit cts
-m CtsDeqpTestCases --abi x86 --skip-preconditions
--skip-all-system-status-check --module-arg
'CtsDeqpTestCases:deqp-use-angle:vulkan'
--module-arg
'CtsDeqpTestCases:include-filter:dEQP-EGL.functional.get_frame_timestamps*';

Change-Id: Id96d0c749c80ba54aa1e48dba85817efab8b7eea
Merged-In: Id96d0c749c80ba54aa1e48dba85817efab8b7eea