Update SupportsScalabilityMode functions to use enum ScalabilityMode.

And add missing values to ScalabilityMode.

Bug: webrtc:11607
Change-Id: I892ac35a3528db11b0901d26902699ecfe8f49a4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/260982
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36792}
diff --git a/api/video_codecs/scalability_mode.h b/api/video_codecs/scalability_mode.h
index e5809ed..262e7ce 100644
--- a/api/video_codecs/scalability_mode.h
+++ b/api/video_codecs/scalability_mode.h
@@ -21,16 +21,27 @@
 enum class ScalabilityMode {
   kL1T1,
   kL1T2,
+  kL1T2h,
   kL1T3,
+  kL1T3h,
   kL2T1,
   kL2T1h,
   kL2T1_KEY,
   kL2T2,
+  kL2T2h,
   kL2T2_KEY,
   kL2T2_KEY_SHIFT,
+  kL2T3,
+  kL2T3h,
   kL2T3_KEY,
   kL3T1,
+  kL3T1h,
+  kL3T1_KEY,
+  kL3T2,
+  kL3T2h,
+  kL3T2_KEY,
   kL3T3,
+  kL3T3h,
   kL3T3_KEY,
   kS2T1,
   kS3T3,