Rename the webrtc_adm_linux* namespaces to webrtc::adm_linux*

webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc

Index: webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
diff --git a/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc b/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
index 3b8cf24773a07ef3db2bd7bbfff9fd71545b756f..defae6b6801f912a4c22bcb9a3ae68da871536ea 100644
--- a/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
+++ b/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
@@ -18,13 +18,13 @@
 #include "webrtc/system_wrappers/include/sleep.h"
 #include "webrtc/system_wrappers/include/trace.h"
 
-webrtc_adm_linux_alsa::AlsaSymbolTable AlsaSymbolTable;
+webrtc::adm_linux_alsa::AlsaSymbolTable AlsaSymbolTable;
 
 // Accesses ALSA functions through our late-binding symbol table instead of
 // directly. This way we don't have to link to libasound, which means our binary
 // will work on systems that don't have it.
 #define LATE(sym) \
-  LATESYM_GET(webrtc_adm_linux_alsa::AlsaSymbolTable, &AlsaSymbolTable, sym)
+  LATESYM_GET(webrtc::adm_linux_alsa::AlsaSymbolTable, &AlsaSymbolTable, sym)
 
 // Redefine these here to be able to do late-binding
 #undef snd_ctl_card_info_alloca