Add MediaError.message

media/base/media_log.cc

Index: media/base/media_log.cc
diff --git a/media/base/media_log.cc b/media/base/media_log.cc
index e354ea03e8c05115636a2a9d0d2e9c759ee63ac9..1b2a16b92eca1d2d50170ed537f152b757bfd0e4 100644
--- a/media/base/media_log.cc
+++ b/media/base/media_log.cc
@@ -8,6 +8,7 @@
 
 #include "base/atomic_sequence_num.h"
 #include "base/json/json_writer.h"
+#include "base/strings/string_util.h"
 #include "base/values.h"
 
 namespace media {
@@ -218,11 +219,33 @@ std::string MediaLog::MediaEventToLogString(const MediaLogEvent& event) {
     PipelineStatus status = static_cast<PipelineStatus>(error_code);
     return EventTypeToString(event.type) + " " + PipelineStatusToString(status);
   }
+
   std::string params_json;
   base::JSONWriter::Write(event.params, &params_json);
   return EventTypeToString(event.type) + " " + params_json;
 }
 
+std::string MediaLog::MediaEventToMessageString(const MediaLogEvent& event) {
+  switch (event.type) {
+    case MediaLogEvent::PIPELINE_ERROR: {
+      int error_code = 0;
+      event.params.GetInteger("pipeline_error", &error_code);
+      DCHECK_NE(error_code, 0);
+      return PipelineStatusToString(static_cast<PipelineStatus>(error_code));
+    }
+    case MediaLogEvent::MEDIA_ERROR_LOG_ENTRY: {
+      std::string result = "";
+      if (event.params.GetString(MediaLogLevelToString(MEDIALOG_ERROR),
+                                 &result))
+        base::ReplaceChars(result, "\n", " ", &result);
+      return result;
+    }
+    default:
+      NOTREACHED();
+      return "";
+  }
+}
+
 std::string MediaLog::BufferingStateToString(BufferingState state) {
   switch (state) {
     case BUFFERING_HAVE_NOTHING:
@@ -240,7 +263,7 @@ MediaLog::~MediaLog() {}
 
 void MediaLog::AddEvent(std::unique_ptr<MediaLogEvent> event) {}
 
-std::string MediaLog::GetLastErrorMessage() {
+std::string MediaLog::GetErrorMessage() {
   return "";
 }