Add an infobar if a session is being controlled by an automated test.

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 96fd3fa40b57c0c9cddc998765d6595b27d9a8fb..b374e173f4f510908733baff684584be2a0fd18d 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -14780,6 +14780,11 @@ read aloud to screenreader users to announce that a completion is available.">
     <message name="IDS_FLAGS_ENABLE_MIDI_MANAGER_DYNAMIC_INSTANTIATION_DESCRIPTION" desc="Description for the flag to enable MIDIManager dynamic instantiation" translateable="false">
       Enable MIDIManager dynamic instantiation for Web MIDI.
     </message>
+
+    <!-- Automation info bar -->
+    <message name="IDS_CONTROLLED_BY_AUTOMATION" desc="Message shown when the browser session is being controlled by an automated test.">
+      Chrome is being controlled by automated test software.
+    </message>
   </messages>
  </release>
 </grit>