Update audio_processing module

Corresponds to upstream commit 524e9b043e7e86fd72353b987c9d5f6a1ebf83e1

Update notes:

 * Pull in third party license file

 * Replace .gypi files with BUILD.gn to keep track of what changes
   upstream

 * Bunch of new filse pulled in as dependencies

 * Won't build yet due to changes needed on top of these

webrtc/system_wrappers/source/trace_impl.h

@@ -0,0 +1,106 @@
+/*
+ *  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_SYSTEM_WRAPPERS_SOURCE_TRACE_IMPL_H_
+#define WEBRTC_SYSTEM_WRAPPERS_SOURCE_TRACE_IMPL_H_
+
+#include "webrtc/base/criticalsection.h"
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/system_wrappers/interface/event_wrapper.h"
+#include "webrtc/system_wrappers/interface/file_wrapper.h"
+#include "webrtc/system_wrappers/interface/static_instance.h"
+#include "webrtc/system_wrappers/interface/thread_wrapper.h"
+#include "webrtc/system_wrappers/interface/trace.h"
+
+namespace webrtc {
+
+#define WEBRTC_TRACE_MAX_MESSAGE_SIZE 1024
+// Total buffer size is WEBRTC_TRACE_NUM_ARRAY (number of buffer partitions) *
+// WEBRTC_TRACE_MAX_QUEUE (number of lines per buffer partition) *
+// WEBRTC_TRACE_MAX_MESSAGE_SIZE (number of 1 byte charachters per line) =
+// 1 or 4 Mbyte.
+
+#define WEBRTC_TRACE_MAX_FILE_SIZE 100*1000
+// Number of rows that may be written to file. On average 110 bytes per row (max
+// 256 bytes per row). So on average 110*100*1000 = 11 Mbyte, max 256*100*1000 =
+// 25.6 Mbyte
+
+class TraceImpl : public Trace {
+ public:
+  virtual ~TraceImpl();
+
+  static TraceImpl* CreateInstance();
+  static TraceImpl* GetTrace(const TraceLevel level = kTraceAll);
+
+  int32_t SetTraceFileImpl(const char* file_name, const bool add_file_counter);
+  int32_t TraceFileImpl(char file_name[FileWrapper::kMaxFileNameSize]);
+
+  int32_t SetTraceCallbackImpl(TraceCallback* callback);
+
+  void AddImpl(const TraceLevel level, const TraceModule module,
+               const int32_t id, const char* msg);
+
+  bool TraceCheck(const TraceLevel level) const;
+
+ protected:
+  TraceImpl();
+
+  static TraceImpl* StaticInstance(CountOperation count_operation,
+                                   const TraceLevel level = kTraceAll);
+
+  int32_t AddThreadId(char* trace_message) const;
+
+  // OS specific implementations.
+  virtual int32_t AddTime(char* trace_message,
+                          const TraceLevel level) const = 0;
+
+  virtual int32_t AddDateTimeInfo(char* trace_message) const = 0;
+
+ private:
+  friend class Trace;
+
+  int32_t AddLevel(char* sz_message, const TraceLevel level) const;
+
+  int32_t AddModuleAndId(char* trace_message, const TraceModule module,
+                         const int32_t id) const;
+
+  int32_t AddMessage(char* trace_message,
+                     const char msg[WEBRTC_TRACE_MAX_MESSAGE_SIZE],
+                     const uint16_t written_so_far) const;
+
+  void AddMessageToList(
+    const char trace_message[WEBRTC_TRACE_MAX_MESSAGE_SIZE],
+    const uint16_t length,
+    const TraceLevel level);
+
+  bool UpdateFileName(
+    const char file_name_utf8[FileWrapper::kMaxFileNameSize],
+    char file_name_with_counter_utf8[FileWrapper::kMaxFileNameSize],
+    const uint32_t new_count) const;
+
+  bool CreateFileName(
+    const char file_name_utf8[FileWrapper::kMaxFileNameSize],
+    char file_name_with_counter_utf8[FileWrapper::kMaxFileNameSize],
+    const uint32_t new_count) const;
+
+  void WriteToFile(const char* msg, uint16_t length)
+      EXCLUSIVE_LOCKS_REQUIRED(crit_);
+
+  TraceCallback* callback_ GUARDED_BY(crit_);
+  uint32_t row_count_text_ GUARDED_BY(crit_);
+  uint32_t file_count_text_ GUARDED_BY(crit_);
+
+  const rtc::scoped_ptr<FileWrapper> trace_file_ GUARDED_BY(crit_);
+  rtc::CriticalSection crit_;
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_SYSTEM_WRAPPERS_SOURCE_TRACE_IMPL_H_