Revert "Update webrtc&libjingle 6774:6799."

third_party/libjingle/overrides/init_webrtc.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef THIRD_PARTY_LIBJINGLE_OVERRIDES_INIT_WEBRTC_H_
 #define THIRD_PARTY_LIBJINGLE_OVERRIDES_INIT_WEBRTC_H_
 
-#include <string>
-
 #include "allocator_shim/allocator_stub.h"
 #include "base/logging.h"
 #include "third_party/webrtc/system_wrappers/interface/event_tracer.h"
 
 namespace base {
 class CommandLine;
 }
 
 namespace cricket {
 class MediaEngineInterface;
@@ skipping 41 matching lines @@
 #if !defined(LIBPEERCONNECTION_IMPLEMENTATION)
 // Load and initialize the shared WebRTC module (libpeerconnection).
 // Call this explicitly to load and initialize the WebRTC module (e.g. before
 // initializing the sandbox in Chrome).
 // If not called explicitly, this function will still be called from the main
 // CreateWebRtcMediaEngine factory function the first time it is called.
 bool InitializeWebRtcModule();
 #endif
 
 #endif // THIRD_PARTY_LIBJINGLE_OVERRIDES_INIT_WEBRTC_H_