bluetooth: Add RSSI icon for bluetooth choosers.

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index 69b1a34f84b18933ec682051959cad2f4775fe0e..5f9ca66308e31da7c365898203129d405e2d77ab 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -1417,6 +1417,11 @@ To obtain new licenses, connect to the internet and play your downloaded content
       <message name="IDS_BLUETOOTH_DEVICE_CONNECTED" desc="Content description for the connected icon next to connected Bluetooth devices.">
         Connected Device
       </message>
+      <message name="IDS_SIGNAL_STRENGTH_LEVEL_N_BARS" desc="Text to be shown next to devices indicating their received signal strength. [ICU Syntax]">
+        {N_BARS, plural,
+          =1 {Signal Strength Level: # bar}
+          other {Signal Strength Level: # bars}}
+      </message>
 
       <!-- Hint of sync error solution strings -->
       <message name="IDS_SYNC_ERROR_CARD_TITLE" desc="Title of the Sync Error Card. [CHAR-LIMIT=32]">