[media] Add memory info to HTMLMediaElement error message (youtube#3669)

Add the result of SbSystemGetTotalCPUMemory() and
SbSystemGetUsedCPUMemory() to media element error message, also remove
all ',' from the error message to save log space.

b/348438829

cobalt/media/base/playback_statistics.cc

@@ -20,6 +20,7 @@
 #include "base/strings/stringprintf.h"
 #include "starboard/atomic.h"
 #include "starboard/common/string.h"
+#include "starboard/system.h"
 
 namespace cobalt {
 namespace media {
@@ -228,13 +229,15 @@ void PlaybackStatistics::OnError(PipelineStatus status,
 std::string PlaybackStatistics::GetStatistics(
     const VideoDecoderConfig& current_video_config) const {
   return starboard::FormatString(
-      "current_codec: %s, drm: %s, width: %d, height: %d"
-      ", active_players (max): %d (%d), av1: ~%" PRId64 ", h264: ~%" PRId64
-      ", hevc: ~%" PRId64 ", vp8: ~%" PRId64 ", vp9: ~%" PRId64
-      ", min_width: %d, min_height: %d, max_width: %d, max_height: %d"
-      ", last_working_codec: %s, seek_time: %s"
-      ", first_audio_time: ~%" PRId64 ", first_video_time: ~%" PRId64
-      ", last_audio_time: ~%" PRId64 ", last_video_time: ~%" PRId64,
+      "total_mem %" PRId64 ", used_mem %" PRId64
+      ", current_codec %s, drm %s, width %d, height %d"
+      ", active_players (max) %d (%d), av1 ~%" PRId64 ", h264 ~%" PRId64
+      ", hevc ~%" PRId64 ", vp8 ~%" PRId64 ", vp9 ~%" PRId64
+      ", min_width %d, min_height %d, max_width %d, max_height %d"
+      ", last_working_codec %s, seek_time %s"
+      ", first_audio_time ~%" PRId64 ", first_video_time ~%" PRId64
+      ", last_audio_time ~%" PRId64 ", last_video_time ~%" PRId64,
+      SbSystemGetTotalCPUMemory(), SbSystemGetUsedCPUMemory(),
       GetCodecName(current_video_config.codec()).c_str(),
       (current_video_config.is_encrypted() ? "Y" : "N"), video_width_.value(),
       video_height_.value(), SbAtomicNoBarrier_Load(&s_active_instances),