Recommend different time source

We were recommending SystemClock#uptimeMillis() from Java code, but
millisecond resolution is a little coarse.  We don't have an
appropriate call in SystemClock, so use System.nanoTime() instead.

Bug 8733179

Change-Id: Ifb85a03eabf7ff168966adcb5ed5914bbf3884b2
diff --git a/opengl/specs/EGL_ANDROID_presentation_time.txt b/opengl/specs/EGL_ANDROID_presentation_time.txt
index 03370ed..09b3938 100644
--- a/opengl/specs/EGL_ANDROID_presentation_time.txt
+++ b/opengl/specs/EGL_ANDROID_presentation_time.txt
@@ -107,8 +107,8 @@
     presentation time when an absolute time is needed be queried on Android?
 
     RESOLVED: The current clock value can be queried from the Java
-    SystemClock#uptimeMillis() method or from the native clock_gettime
-    function by passing CLOCK_MONOTONIC as the clock identifier.
+    System.nanoTime() method, or from the native clock_gettime function by
+    passing CLOCK_MONOTONIC as the clock identifier.
 
 Revision History