Fix MSE GC, make it less aggressive, more spec-compliant

media/blink/websourcebuffer_impl.cc

Index: media/blink/websourcebuffer_impl.cc
diff --git a/media/blink/websourcebuffer_impl.cc b/media/blink/websourcebuffer_impl.cc
index e23c24102eb8e4e114d96d0597b23b7b99316216..f4507f36a77e4179dbdab9d267ea42544a04ca5b 100644
--- a/media/blink/websourcebuffer_impl.cc
+++ b/media/blink/websourcebuffer_impl.cc
@@ -83,10 +83,10 @@ blink::WebTimeRanges WebSourceBufferImpl::buffered() {
 
 bool WebSourceBufferImpl::evictCodedFrames(double currentPlaybackTime,
                                            size_t newDataSize) {
-  // TODO(servolk): A dummy method to facilitate landing MSE GC changes.
-  // Will be replaced with actual implementation in CL
-  // https://codereview.chromium.org/1008463002/
-  return true;
+  return demuxer_->EvictCodedFrames(
+      id_,
+      base::TimeDelta::FromSecondsD(currentPlaybackTime),
+      newDataSize);
 }
 
 void WebSourceBufferImpl::append(