media: Remove VP9 flag, and enable VP9 support by default.

media/filters/stream_parser_factory.cc

Index: media/filters/stream_parser_factory.cc
diff --git a/media/filters/stream_parser_factory.cc b/media/filters/stream_parser_factory.cc
index 2436ef6e37e1eebd327d315ff467ea03288a60f5..c883f967d9e37b6f9ac8d8f94ea9ca95bfddc1ca 100644
--- a/media/filters/stream_parser_factory.cc
+++ b/media/filters/stream_parser_factory.cc
@@ -200,25 +200,19 @@ static bool VerifyCodec(
     const CodecInfo* codec_info,
     std::vector<CodecInfo::HistogramTag>* audio_codecs,
     std::vector<CodecInfo::HistogramTag>* video_codecs) {
-  const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   switch (codec_info->type) {
     case CodecInfo::AUDIO:
 #if defined(ENABLE_EAC3_PLAYBACK)
-      if (codec_info->tag == CodecInfo::HISTOGRAM_EAC3 &&
-          !cmd_line->HasSwitch(switches::kEnableEac3Playback)) {
-        return false;
+      if (codec_info->tag == CodecInfo::HISTOGRAM_EAC3) {
+        const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+        if (!cmd_line->HasSwitch(switches::kEnableEac3Playback))
+          return false;
       }
 #endif
       if (audio_codecs)
         audio_codecs->push_back(codec_info->tag);
       return true;
     case CodecInfo::VIDEO:
-      // TODO(tomfinegan): Remove this check (or negate it, if we just
-      // negate the flag) when VP9 is enabled by default.
-      if (codec_info->tag == CodecInfo::HISTOGRAM_VP9 &&
-          !cmd_line->HasSwitch(switches::kEnableVp9Playback)) {
-        return false;
-      }
       if (video_codecs)
         video_codecs->push_back(codec_info->tag);
       return true;