Add localized default audio device names.

chrome/app/google_chrome_strings.grd

Index: chrome/app/google_chrome_strings.grd
diff --git a/chrome/app/google_chrome_strings.grd b/chrome/app/google_chrome_strings.grd
index 847abc525e1c6a8721314ef36ef373a8c46e1942..6d26e4af58232fe4e73c9ce0dfa4253f14e6e414 100644
--- a/chrome/app/google_chrome_strings.grd
+++ b/chrome/app/google_chrome_strings.grd
@@ -1313,6 +1313,24 @@ Signing in anyway will merge Chrome information like bookmarks, history, and oth
         </message>
       </if>
 
+      <!-- Audio device names. -->
+      <message name="IDS_DEFAULT_AUDIO_DEVICE_NAME" desc="Name representing the system default audio device (i.e. microphone or loudspeaker). This is typically presented to users in a drop-down list of device choices. Selecting it means the system will decide which device to use.">
+        Default
+      </message>
+      <if expr="is_win">
+        <message name="IDS_COMMUNICATIONS_AUDIO_DEVICE_NAME" desc="Name representing the system default communications audio device (i.e. microphone or loudspeaker). This is typically presented to users in a drop-down list of device choices. Selecting it means the system will decide which device to use for communications.">
+          Communications
+        </message>
+      </if>
+      <if expr="chromeos">
+        <message name="IDS_BEAMFORMING_ON_DEFAULT_AUDIO_INPUT_DEVICE_NAME" desc="Name representing the default audio input device (i.e. microphone), but with beamforming audio processing enabled. This is typically presented to users in a drop-down list of device choices. Selecting it means the system will decide which device to use, but with beamforming enabled. This will generally cause only the user in front of the device to be picked up by the microphones.">
+          Default (pick up just one person)
+        </message>
+        <message name="IDS_BEAMFORMING_OFF_DEFAULT_AUDIO_INPUT_DEVICE_NAME" desc="Name representing the default audio input device (i.e. microphone), but with beamforming audio processing disabled. This is typically presented to users in a drop-down list of device choices. Selecting it means the system will decide which device to use, but with beamforming disabled. This will generally cause everything in the vicinity to be picked up by the microphones.">
+          Default (pick up everything)
+        </message>
+      </if>
+
     </messages>
   </release>
 </grit>