Add resolution bitrate thresholds to EncoderInfo.

When provided, these thresholds will be used instead of WebRTC default
limits specified in DropDueToSize() and GetMaxDefaultVideoBitrateKbps().

Bug: none
Change-Id: Ida45ea832041963b8b8475d69114b5c60a172fb7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/142170
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Alex Glaznev <glaznev@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28390}

sdk/android/native_unittests/org/webrtc/CodecsWrapperTestHelper.java

@@ -23,4 +23,9 @@ public class CodecsWrapperTestHelper {
     VideoCodecInfo codec_info = new VideoCodecInfo("H264", params);
     return codec_info;
   }
+
+  @CalledByNative
+  public static VideoEncoder createFakeVideoEncoder() {
+    return new FakeVideoEncoder();
+  }
 }