Add tests for cpu overuse scaling.

Test that adapt down is triggered on overuse for different degradation preference configurations.

Bug: none
Change-Id: I326e979c10d09d17a7c1e6ece9a719f5fd4bff5f
Reviewed-on: https://webrtc-review.googlesource.com/c/97303
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Åsa Persson <asapersson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25611}
diff --git a/test/call_test.cc b/test/call_test.cc
index 7d78250..805829e 100644
--- a/test/call_test.cc
+++ b/test/call_test.cc
@@ -166,6 +166,7 @@
       int height = kDefaultHeight;
       int frame_rate = kDefaultFramerate;
       test->ModifyVideoCaptureStartResolution(&width, &height, &frame_rate);
+      test->ModifyVideoDegradationPreference(&degradation_preference_);
       CreateFrameGeneratorCapturer(frame_rate, width, height);
       test->OnFrameGeneratorCapturerCreated(frame_generator_capturer_);
     }
@@ -783,6 +784,9 @@
                                                  int* heigt,
                                                  int* frame_rate) {}
 
+void BaseTest::ModifyVideoDegradationPreference(
+    DegradationPreference* degradation_preference) {}
+
 void BaseTest::OnVideoStreamsCreated(
     VideoSendStream* send_stream,
     const std::vector<VideoReceiveStream*>& receive_streams) {}