Fixing WebRTC after moving from src/webrtc to src/

In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC
from src/webrtc to src/ (in order to preserve an healthy git history).
This CL takes care of fixing header guards, #include paths, etc...

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org


Bug: chromium:611808
Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578
Reviewed-on: https://webrtc-review.googlesource.com/1561
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19846}
diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 9b80318..feea33d 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -8,44 +8,44 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/modules/audio_processing/audio_processing_impl.h"
+#include "modules/audio_processing/audio_processing_impl.h"
 
 #include <math.h>
 #include <algorithm>
 #include <string>
 
-#include "webrtc/common_audio/audio_converter.h"
-#include "webrtc/common_audio/channel_buffer.h"
-#include "webrtc/common_audio/include/audio_util.h"
-#include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
-#include "webrtc/modules/audio_processing/aec/aec_core.h"
-#include "webrtc/modules/audio_processing/aec3/echo_canceller3.h"
-#include "webrtc/modules/audio_processing/agc/agc_manager_direct.h"
-#include "webrtc/modules/audio_processing/agc2/gain_controller2.h"
-#include "webrtc/modules/audio_processing/audio_buffer.h"
-#include "webrtc/modules/audio_processing/beamformer/nonlinear_beamformer.h"
-#include "webrtc/modules/audio_processing/common.h"
-#include "webrtc/modules/audio_processing/echo_cancellation_impl.h"
-#include "webrtc/modules/audio_processing/echo_control_mobile_impl.h"
-#include "webrtc/modules/audio_processing/gain_control_for_experimental_agc.h"
-#include "webrtc/modules/audio_processing/gain_control_impl.h"
-#include "webrtc/rtc_base/checks.h"
-#include "webrtc/rtc_base/logging.h"
-#include "webrtc/rtc_base/platform_file.h"
-#include "webrtc/rtc_base/trace_event.h"
+#include "common_audio/audio_converter.h"
+#include "common_audio/channel_buffer.h"
+#include "common_audio/include/audio_util.h"
+#include "common_audio/signal_processing/include/signal_processing_library.h"
+#include "modules/audio_processing/aec/aec_core.h"
+#include "modules/audio_processing/aec3/echo_canceller3.h"
+#include "modules/audio_processing/agc/agc_manager_direct.h"
+#include "modules/audio_processing/agc2/gain_controller2.h"
+#include "modules/audio_processing/audio_buffer.h"
+#include "modules/audio_processing/beamformer/nonlinear_beamformer.h"
+#include "modules/audio_processing/common.h"
+#include "modules/audio_processing/echo_cancellation_impl.h"
+#include "modules/audio_processing/echo_control_mobile_impl.h"
+#include "modules/audio_processing/gain_control_for_experimental_agc.h"
+#include "modules/audio_processing/gain_control_impl.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/logging.h"
+#include "rtc_base/platform_file.h"
+#include "rtc_base/trace_event.h"
 #if WEBRTC_INTELLIGIBILITY_ENHANCER
-#include "webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h"
+#include "modules/audio_processing/intelligibility/intelligibility_enhancer.h"
 #endif
-#include "webrtc/modules/audio_processing/level_controller/level_controller.h"
-#include "webrtc/modules/audio_processing/level_estimator_impl.h"
-#include "webrtc/modules/audio_processing/low_cut_filter.h"
-#include "webrtc/modules/audio_processing/noise_suppression_impl.h"
-#include "webrtc/modules/audio_processing/residual_echo_detector.h"
-#include "webrtc/modules/audio_processing/transient/transient_suppressor.h"
-#include "webrtc/modules/audio_processing/voice_detection_impl.h"
-#include "webrtc/modules/include/module_common_types.h"
-#include "webrtc/system_wrappers/include/file_wrapper.h"
-#include "webrtc/system_wrappers/include/metrics.h"
+#include "modules/audio_processing/level_controller/level_controller.h"
+#include "modules/audio_processing/level_estimator_impl.h"
+#include "modules/audio_processing/low_cut_filter.h"
+#include "modules/audio_processing/noise_suppression_impl.h"
+#include "modules/audio_processing/residual_echo_detector.h"
+#include "modules/audio_processing/transient/transient_suppressor.h"
+#include "modules/audio_processing/voice_detection_impl.h"
+#include "modules/include/module_common_types.h"
+#include "system_wrappers/include/file_wrapper.h"
+#include "system_wrappers/include/metrics.h"
 
 // Check to verify that the define for the intelligibility enhancer is properly
 // set.