Update CHANGELOG for libaom v3.10.0

Bug: 361339153
Change-Id: Icca331d511c73185067453a9a43a09848a94ef7c

CHANGELOG

-2024-08-21 v3.10.0
+2024-08-26 v3.10.0
   This release includes new codec interfaces, compression efficiency and
   perceptual improvements, speedup and memory optimizations and many bug
   fixes. This release is ABI compatible with the last release.
@@ -10,7 +10,7 @@
     * New codec controls:
       * AV1E_SET_AUTO_TILES
       * AV1E_GET_HIGH_MOTION_CONTENT_SCREEN_RTC
-      * AV1E_SET_POSTENCODE_DROP_RTC
+      * AV1E_SET_POSTENCODE_DROP_RTC: Post encode frame drop feature.
       * AV1E_SET_MAX_CONSEC_FRAME_DROP_MS_CBR
     * New key-value pair for aom_codec_set_option():
       * "auto-tiles": equivalent to the new codec control
@@ -23,6 +23,28 @@
     * The sframe_mode field in the aom_codec_enc_cfg_t struct is not
       implemented.
 
+  - Compression Efficiency Improvements
+    * BD-rate gain of 0.7 - 1.3% (by enabling global motion tool) for
+      speed 5 and speed 6 with ~5% encode time increase.
+    * RTC speed 11 video: ~3-5% BD-rate gain for VGA and QVGA.
+
+  - Perceptual Quality Improvements
+    * RTC quality improvements for slide changes and scrolling content.
+
+  - Speedup and Memory Optimizations
+    * RTC screen content speedups:
+      * ~2x speedup for high motion content for speed 11.
+      * ~2x speedup on key frame coding for speed >= 10.
+
+  - Other Improvements
+    * Reduce bit rate overshoot on slide content.
+
+  - Bug Fixes
+    * rtc: Bug fix for active_maps with sb_size=128.
+    * b:343429036: rtc: Fix source_sad setting near boundary.
+    * Fix to QP for temporal enhancement after key frame.
+    * b:343429192: rtc: Condition QP adjustment on rc->q_1/2_frame > 0.
+
 2024-06-07 v3.8.3
   This release includes several bug fixes. This release is ABI
   compatible with the last release. See