Make EndToEndTest.ContentTypeSwitches more robust by sending more frames before test ends

webrtc/video/end_to_end_tests.cc

Index: webrtc/video/end_to_end_tests.cc
diff --git a/webrtc/video/end_to_end_tests.cc b/webrtc/video/end_to_end_tests.cc
index f171c5b3883ea1fbc524959f7bfc82be3bdb74da..0c76b0fc56ac274643c42761c6a78ad9bcf9b70f 100644
--- a/webrtc/video/end_to_end_tests.cc
+++ b/webrtc/video/end_to_end_tests.cc
@@ -2720,7 +2720,8 @@ TEST_F(EndToEndTest, ContentTypeSwitches) {
     }
 
     bool MinNumberOfFramesReceived() const {
-      const int kMinRequiredHistogramSamples = 200;
+      // Have some room for frames with wrong content type during switch.
+      const int kMinRequiredHistogramSamples = 200+50;
       rtc::CritScope lock(&crit_);
       return num_frames_received_ > kMinRequiredHistogramSamples;
     }