Replace Atomic32 with webrtc/base/atomicops.h.

webrtc/system_wrappers/BUILD.gn

 # Copyright (c) 2014 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.
 
 import("//build/config/android/config.gni")
 import("../build/webrtc.gni")
 
 static_library("system_wrappers") {
   sources = [
     "interface/aligned_array.h",
     "interface/aligned_malloc.h",
-    "interface/atomic32.h",
     "interface/clock.h",
     "interface/condition_variable_wrapper.h",
     "interface/cpu_features_wrapper.h",
     "interface/cpu_info.h",
     "interface/critical_section_wrapper.h",
     "interface/data_log.h",
     "interface/data_log_c.h",
     "interface/data_log_impl.h",
     "interface/event_tracer.h",
     "interface/event_wrapper.h",
@@ skipping 11 matching lines @@
     "interface/static_instance.h",
     "interface/stl_util.h",
     "interface/stringize_macros.h",
     "interface/thread_wrapper.h",
     "interface/tick_util.h",
     "interface/timestamp_extrapolator.h",
     "interface/trace.h",
     "interface/trace_event.h",
     "interface/utf_util_win.h",
     "source/aligned_malloc.cc",
-    "source/atomic32_mac.cc",
-    "source/atomic32_win.cc",
     "source/clock.cc",
     "source/condition_variable.cc",
     "source/condition_variable_event_win.cc",
     "source/condition_variable_event_win.h",
     "source/condition_variable_native_win.cc",
     "source/condition_variable_native_win.h",
     "source/condition_variable_posix.cc",
     "source/condition_variable_posix.h",
     "source/cpu_features.cc",
     "source/cpu_info.cc",
@@ skipping 78 matching lines @@
     defines += [
       "WEBRTC_THREAD_RR",
       # TODO(andrew): can we select this automatically?
       # Define this if the Linux system does not support CLOCK_MONOTONIC.
       #"WEBRTC_CLOCK_TYPE_REALTIME",
     ]
 
     libs += [ "rt" ]
   }
 
-  if (!is_mac && !is_ios) {
-    sources += [ "source/atomic32_posix.cc" ]
-  }
-
   if (is_ios || is_mac) {
     defines += [
       "WEBRTC_THREAD_RR",
       "WEBRTC_CLOCK_TYPE_REALTIME",
     ]
   }
 
-  if (is_ios) {
-    sources += [ "source/atomic32_mac.cc" ]
-  }
-
   if (is_win) {
     libs += [ "winmm.lib" ]
 
     cflags = [
       "/wd4267",  # size_t to int truncation.
       "/wd4334",  # Ignore warning on shift operator promotion.
     ]
   }
 
   deps += [ "../base:rtc_base_approved" ]
@@ skipping 42 matching lines @@
       "source/cpu_features_android.c",
     ]
 
     configs += [ "..:common_config" ]
     public_configs = [ "..:common_inherited_config" ]
     deps = [
       "//third_party/android_tools:cpu_features",
     ]
   }
 }