Rename the webrtc_adm_linux* namespaces to webrtc::adm_linux*

webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.cc

Index: webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.cc
diff --git a/webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.cc b/webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.cc
index 1f1890a6d96a9b44c28698409263c4cc5fbb6aa0..26a173d4b643167a924bbe864dbf36b4415b9598 100644
--- a/webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.cc
+++ b/webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.cc
@@ -27,7 +27,8 @@
 
 #include "webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.h"
 
-namespace webrtc_adm_linux_pulse {
+namespace webrtc {
+namespace adm_linux_pulse {
 
 LATE_BINDING_SYMBOL_TABLE_DEFINE_BEGIN(PulseAudioSymbolTable, "libpulse.so.0")
 #define X(sym) \
@@ -36,4 +37,5 @@ PULSE_AUDIO_SYMBOLS_LIST
 #undef X
 LATE_BINDING_SYMBOL_TABLE_DEFINE_END(PulseAudioSymbolTable)
 
-}  // namespace webrtc_adm_linux_pulse
+}  // namespace adm_linux_pulse
+}  // namespace webrtc