Initial upload of NetEq4

This is the first public upload of the new NetEq, version 4.

It has been through extensive internal review during the course of
the project.

TEST=trybots

Review URL: https://webrtc-codereview.appspot.com/1073005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3425 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/neteq4/mock/mock_dtmf_buffer.h b/webrtc/modules/audio_coding/neteq4/mock/mock_dtmf_buffer.h
new file mode 100644
index 0000000..5a89db4
--- /dev/null
+++ b/webrtc/modules/audio_coding/neteq4/mock/mock_dtmf_buffer.h
@@ -0,0 +1,38 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ4_MOCK_MOCK_DTMF_BUFFER_H_
+#define WEBRTC_MODULES_AUDIO_CODING_NETEQ4_MOCK_MOCK_DTMF_BUFFER_H_
+
+#include "webrtc/modules/audio_coding/neteq4/dtmf_buffer.h"
+
+#include "gmock/gmock.h"
+
+namespace webrtc {
+
+class MockDtmfBuffer : public DtmfBuffer {
+ public:
+  MockDtmfBuffer(int fs) : DtmfBuffer(fs) {}
+  virtual ~MockDtmfBuffer() { Die(); }
+  MOCK_METHOD0(Die, void());
+  MOCK_METHOD0(Flush,
+      void());
+  MOCK_METHOD1(InsertEvent,
+      int(const DtmfEvent& event));
+  MOCK_METHOD2(GetEvent,
+      bool(uint32_t current_timestamp, DtmfEvent* event));
+  MOCK_CONST_METHOD0(Length,
+      size_t());
+  MOCK_CONST_METHOD0(Empty,
+      bool());
+};
+
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ4_MOCK_MOCK_DTMF_BUFFER_H_