Remove all uses of LOG_DISABLED in blink

third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp

Index: third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
diff --git a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
index 6af62fde445f34445cbc26891a141225396b9293..dbb1c82a7a39ed92349f1024e2c08b3b0c634726 100644
--- a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
+++ b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
@@ -805,7 +805,7 @@ bool SourceBuffer::InitializationSegmentReceived(
                   << " failed: tracks mismatch the first init segment.";
       return false;
     }
-#if !LOG_DISABLED
+#if DCHECK_IS_ON()
     const char* log_track_type_str =
         (track_info.track_type == WebMediaPlayer::kAudioTrack) ? "audio"
                                                                : "video";