Fix the timestamp generation for webrtc native log.

content/renderer/media/webrtc_logging.cc

Index: content/renderer/media/webrtc_logging.cc
diff --git a/content/renderer/media/webrtc_logging.cc b/content/renderer/media/webrtc_logging.cc
index 29cf5f50c9b1e6c1249e5662702c4f0c9c73d093..a625c5f6a586f2e3f00ebe26ab2ecfdc145ee8ea 100644
--- a/content/renderer/media/webrtc_logging.cc
+++ b/content/renderer/media/webrtc_logging.cc
@@ -4,9 +4,6 @@
 
 #include "content/renderer/media/webrtc_logging.h"
 
-#include <iomanip>
-#include <sstream>
-
 #include "base/time/time.h"
 #include "content/public/renderer/webrtc_log_message_delegate.h"
 #include "third_party/libjingle/overrides/talk/base/logging.h"
@@ -27,32 +24,15 @@ void InitWebRtcLoggingDelegate(WebRtcLogMessageDelegate* delegate) {
       base::Time::kMicrosecondsPerMillisecond;
 }
 
-void WebRtcLogMessageWithTimestamp(const std::string& message) {
-  if (g_webrtc_logging_delegate)
-    g_webrtc_logging_delegate->LogMessage(message);
-}
-
 void InitWebRtcLogging() {
-  // Log messages from Libjingle should always have timestamps.
-  talk_base::InitDiagnosticLoggingDelegateFunction(
-      WebRtcLogMessageWithTimestamp);
+  // Log messages from Libjingle should not have timestamps.
+  talk_base::InitDiagnosticLoggingDelegateFunction(WebRtcLogMessage);
 }
 
 void WebRtcLogMessage(const std::string& message) {
-  // Keep consistent with talk_base::DiagnosticLogMessage::CreateTimestamp.
-  // TODO(grunell): remove the duplicated code and unify the timestamp creation.
-  uint64 now_us = base::Time::Now().ToInternalValue();
-  uint64 interval_ms = now_us / base::Time::kMicrosecondsPerMillisecond -
-      g_started_time_ms_;
-
-  std::ostringstream message_oss;
-  message_oss << "[" << std::setfill('0') << std::setw(3)
-              << (interval_ms / 1000)
-              << ":" << std::setw(3)
-              << (interval_ms % 1000)
-              << std::setfill(' ') << "] " << message;
-
-  WebRtcLogMessageWithTimestamp(message_oss.str());
+  if (g_webrtc_logging_delegate) {
+    g_webrtc_logging_delegate->LogMessage(message);
+  }
 }
 
 }  // namespace content