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diff --git a/src/modules/audio_processing/main/source/echo_control_mobile_impl.h b/src/modules/audio_processing/main/source/echo_control_mobile_impl.h
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+++ b/src/modules/audio_processing/main/source/echo_control_mobile_impl.h
@@ -0,0 +1,59 @@
+/*
+ *  Copyright (c) 2011 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_PROCESSING_MAIN_SOURCE_ECHO_CONTROL_MOBILE_IMPL_H_
+#define WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_ECHO_CONTROL_MOBILE_IMPL_H_
+
+#include "audio_processing.h"
+#include "processing_component.h"
+
+namespace webrtc {
+class AudioProcessingImpl;
+class AudioBuffer;
+
+class EchoControlMobileImpl : public EchoControlMobile,
+                              public ProcessingComponent {
+ public:
+  explicit EchoControlMobileImpl(const AudioProcessingImpl* apm);
+  virtual ~EchoControlMobileImpl();
+
+  int ProcessRenderAudio(const AudioBuffer* audio);
+  int ProcessCaptureAudio(AudioBuffer* audio);
+
+  // EchoControlMobile implementation.
+  virtual bool is_enabled() const;
+
+  // ProcessingComponent implementation.
+  virtual int Initialize();
+  virtual int get_version(char* version, int version_len_bytes) const;
+
+ private:
+  // EchoControlMobile implementation.
+  virtual int Enable(bool enable);
+  virtual int set_routing_mode(RoutingMode mode);
+  virtual RoutingMode routing_mode() const;
+  virtual int enable_comfort_noise(bool enable);
+  virtual bool is_comfort_noise_enabled() const;
+
+  // ProcessingComponent implementation.
+  virtual void* CreateHandle() const;
+  virtual int InitializeHandle(void* handle) const;
+  virtual int ConfigureHandle(void* handle) const;
+  virtual int DestroyHandle(void* handle) const;
+  virtual int num_handles_required() const;
+  virtual int GetHandleError(void* handle) const;
+
+  const AudioProcessingImpl* apm_;
+  RoutingMode routing_mode_;
+  bool comfort_noise_enabled_;
+};
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_ECHO_CONTROL_MOBILE_IMPL_H_