app_shell: Add audio and video capture support

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index b1004972728771acb4d31273ec7d8b97e8caae9f..01ed9d46e46d01f54a866b3a2b730a6ca602918f 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4358,15 +4358,6 @@ Make sure you do not expose any sensitive information.
       <message name="IDS_EXTENSION_PROMPT_WARNING_BLUETOOTH_DEVICES" desc="Permission string for implementing Bluetooth profiles.">
         Send messages to and receive messages from Bluetooth devices.
       </message>
-      <message name="IDS_EXTENSION_PROMPT_WARNING_AUDIO_CAPTURE" desc="Permission string for access to audio capture devices.">
-        Use your microphone
-      </message>
-      <message name="IDS_EXTENSION_PROMPT_WARNING_VIDEO_CAPTURE" desc="Permission string for access to video capture devices.">
-        Use your camera
-      </message>
-      <message name="IDS_EXTENSION_PROMPT_WARNING_AUDIO_AND_VIDEO_CAPTURE" desc="Permission string for access to both audio and video capture devices.">
-        Use your microphone and camera
-      </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_DOWNLOADS" desc="Permission string for access to downloads.">
         Manage your downloads
       </message>