Add API to get added samples from SamplesStatsCounter

Bug: webrtc:10138
Change-Id: Idf283309b5323d1cb7484bffdf400d62c80a88d2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/133566
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27762}
diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index e7ad807..fc3a3f3 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -603,6 +603,7 @@
     ":checks",
     ":rtc_base_approved",
     ":safe_compare",
+    "../api:array_view",
     "//third_party/abseil-cpp/absl/algorithm:container",
     "//third_party/abseil-cpp/absl/types:optional",
   ]