Rename RWLockGeneric to RWLockWinXP to more accurately reflect when it's used.

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")
@@ skipping 52 matching lines @@
     "source/event.cc",
     "source/event_timer_posix.cc",
     "source/event_timer_posix.h",
     "source/event_timer_win.cc",
     "source/event_timer_win.h",
     "source/file_impl.cc",
     "source/file_impl.h",
     "source/logging.cc",
     "source/rtp_to_ntp.cc",
     "source/rw_lock.cc",
-    "source/rw_lock_generic.cc",
-    "source/rw_lock_generic.h",
     "source/rw_lock_posix.cc",
     "source/rw_lock_posix.h",
     "source/rw_lock_win.cc",
     "source/rw_lock_win.h",
+    "source/rw_lock_winxp_win.cc",
+    "source/rw_lock_winxp_win.h",
     "source/sleep.cc",
     "source/sort.cc",
     "source/tick_util.cc",
     "source/timestamp_extrapolator.cc",
     "source/trace_impl.cc",
     "source/trace_impl.h",
     "source/trace_posix.cc",
     "source/trace_posix.h",
     "source/trace_win.cc",
     "source/trace_win.h",
@@ skipping 110 matching lines @@
       "source/cpu_features_android.c",
     ]
 
     configs += [ "..:common_config" ]
     public_configs = [ "..:common_inherited_config" ]
     deps = [
       "//third_party/android_tools:cpu_features",
     ]
   }
 }