MediaRecorder: remove ASSERTS in bitrate clamping.

third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-bitrates.html

 <!DOCTYPE html>
 <script src=../../resources/testharness.js></script>
 <script src=../../resources/testharnessreport.js></script>
 <script>
 
 // This test verifies that MediaRecorder can be created or not with different
 // bitrates for video, audio and for both [1]. It checks a few numerical bitrate
 // allocations, asserting that individual bit rates are honored or clamped as
 // expected, and how the overall bitsPerSecond is divided into video and audio
 // bitrates.
@@ skipping 14 matching lines @@
         const onError = test.unreached_func('Error creating MediaStream.');
         navigator.webkitGetUserMedia(constraints, gotStream, onError);
     }, testName);
 };
 
 const kTooSmallBps = 1000;
 const kTooLargeBps = 1000000000;
 
 const kOkVideoBps = 500000;
 const kMinVideoBps = 100000;
+// Note that unspecified audio bitrates are not clamped to a minimum.
 makeExpectedBitrateAsyncTest({ videoBitsPerSecond : kOkVideoBps },
                              'Video bitrate OK',
                              { video : kOkVideoBps, audio : 0 });
 makeExpectedBitrateAsyncTest({ videoBitsPerSecond : kTooSmallBps },
                              'Video bitrate clamped to minimum',
                              { video : kMinVideoBps, audio : 0 });
+makeExpectedBitrateAsyncTest({ videoBitsPerSecond : 0 },
+                             'Video bitrate explicitly set to 0 is clamped',
+                             { video : kMinVideoBps, audio : 0 });
 
 const kOkAudioBps = 10000;
 const kMinAudioBps = 6000;  // https://www.opus-codec.org/
 const kMaxAudioBps = 128000;
+// Note that unspecified video bitrates are not clamped to a minimum.
 makeExpectedBitrateAsyncTest({ audioBitsPerSecond : kOkAudioBps },
                              'Audio bitrate OK',
                              { audio : kOkAudioBps, video : 0 });
 makeExpectedBitrateAsyncTest({ audioBitsPerSecond : kTooSmallBps },
                              'Audio bitrate clamped to minimum',
                              { audio : kMinAudioBps, video : 0 });
 makeExpectedBitrateAsyncTest({ audioBitsPerSecond : kTooLargeBps },
                              'Audio bitrate clamped to maximum',
                              { audio : kMaxAudioBps , video : 0});
+makeExpectedBitrateAsyncTest({ audioBitsPerSecond : 0 },
+                             'Audio bitrate explicitly 0 is clamped',
+                             { audio : kMinAudioBps, video : 0 });
+
+makeExpectedBitrateAsyncTest({},
+                             'Unspecified bitrates are not clamped',
+                             { video : 0, audio : 0 });
+
 makeExpectedBitrateAsyncTest({ videoBitsPerSecond : kOkVideoBps, audioBitsPerSecond : kOkAudioBps },
                              'Video and audio bitrates OK',
                              { video : kOkVideoBps, audio : kOkAudioBps });
 
 const kOkOverallBps = 120000;
 makeExpectedBitrateAsyncTest({ bitsPerSecond : kOkOverallBps },
                              'Overall bitrate OK (divided 90/10 video/audio)',
                              { video : kOkOverallBps * 0.9, audio : kOkOverallBps * 0.1 });
 makeExpectedBitrateAsyncTest({ videoBitsPerSecond : kOkVideoBps, bitsPerSecond : kOkOverallBps },
                              'Overall bitrate OK, w/ explicit video bitrate ignored',
-                              { video : kOkOverallBps * 0.9, audio : kOkOverallBps * 0.1 });
+                             { video : kOkOverallBps * 0.9, audio : kOkOverallBps * 0.1 });
 makeExpectedBitrateAsyncTest({ audioBitsPerSecond : kOkAudioBps, bitsPerSecond : kOkOverallBps },
-                              'Overall bitrate OK, w/ explicit audio bitrate ignored',
-                              { video : kOkOverallBps * 0.9, audio : kOkOverallBps * 0.1 });
+                             'Overall bitrate OK, w/ explicit audio bitrate ignored',
+                             { video : kOkOverallBps * 0.9, audio : kOkOverallBps * 0.1 });
 
 makeExpectedBitrateAsyncTest({ bitsPerSecond : 10E6 },
                              'Overall bitrate leads to audio clamped to its maximum',
                              { video : 10E6 - kMaxAudioBps, audio : kMaxAudioBps });
 makeExpectedBitrateAsyncTest({ bitsPerSecond : (kMinVideoBps - 1E3) },
                              'Overall bitrate leads to video clamped to its minimum',
                              { video : kMinVideoBps, audio : (kMinVideoBps - 1E3) * 0.1 });
 makeExpectedBitrateAsyncTest({ bitsPerSecond : kTooSmallBps },
                              'Overall bitrate leads to both audio and video clamped to min',
                              { video : kMinVideoBps, audio : kMinAudioBps });
 
+makeExpectedBitrateAsyncTest({ videoBitsPerSecond: kOkVideoBps, bitsPerSecond: 0 },
+                             'Overall bitrate 0 overrides specified video bitrate',
+                             { video: kMinVideoBps, audio: kMinAudioBps });
+makeExpectedBitrateAsyncTest({ audioBitsPerSecond: kOkAudioBps, bitsPerSecond: 0 },
+                             'Overall bitrate 0 overrides specified audio bitrate',
+                             { video: kMinVideoBps, audio: kMinAudioBps });
+
+const kMaxInt32Value = Math.pow(2, 31) - 1;
+makeExpectedBitrateAsyncTest({ bitsPerSecond : -1 },
+                             'Overall bitrate too large is clamped',
+                             { video : kMaxInt32Value - kMaxAudioBps, audio : kMaxAudioBps});
 
 </script>