Add missing dependencies on //third_party/abseil-cpp/absl/memory.

Abseil uses -isystem and -imsvc because of some warnings, these two
flags are not used by "gn check", this introduced some regressions.

CL https://chromium-review.googlesource.com/c/chromium/src/+/1124478
will try to switch back absl to -I.

Bug: None
Change-Id: I52e857ef1d11831393c35a1bee09479b83827bad
Reviewed-on: https://webrtc-review.googlesource.com/88121
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23923}
diff --git a/sdk/BUILD.gn b/sdk/BUILD.gn
index 37764b4..c2263f6 100644
--- a/sdk/BUILD.gn
+++ b/sdk/BUILD.gn
@@ -805,6 +805,7 @@
         "../pc:peerconnection",
         "../rtc_base:checks",
         "../rtc_base:rtc_base",
+        "//third_party/abseil-cpp/absl/memory",
       ]
 
       if (is_ios) {
@@ -1186,6 +1187,7 @@
         "../api/video_codecs:video_codecs_api",
         "../common_video",
         "../rtc_base:rtc_base",
+        "//third_party/abseil-cpp/absl/memory",
       ]
     }
 
@@ -1232,6 +1234,7 @@
         "../modules/video_coding:video_codec_interface",
         "../rtc_base:checks",
         "../rtc_base:rtc_base",
+        "//third_party/abseil-cpp/absl/memory",
       ]
     }