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

components/infobars/core/infobar_delegate.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_INFOBARS_CORE_INFOBAR_DELEGATE_H_
 #define COMPONENTS_INFOBARS_CORE_INFOBAR_DELEGATE_H_
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "build/build_config.h"
@@ skipping 126 matching lines @@
     UPDATE_PASSWORD_INFOBAR_DELEGATE = 63,
     DATA_REDUCTION_PROMO_INFOBAR_DELEGATE_ANDROID = 64,
     AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_DELEGATE_ANDROID = 65,
     SUBRESOURCE_FILTER_INFOBAR_DELEGATE_ANDROID = 66,
     INSTANT_APPS_INFOBAR_DELEGATE_ANDROID = 67,
     DATA_REDUCTION_PROXY_PREVIEW_INFOBAR_DELEGATE = 68,
     SCREEN_CAPTURE_INFOBAR_DELEGATE_ANDROID = 69,
     GROUPED_PERMISSION_INFOBAR_DELEGATE_ANDROID = 70,
     OFFLINE_PAGE_INFOBAR_DELEGATE = 71,
     SEARCH_GEOLOCATION_DISCLOSURE_INFOBAR_DELEGATE = 72,
+    CHROMEDRIVER_INFOBAR_DELEGATE = 73,

[Peter Kasting, 2017/02/13 23:16:52]

You also need to add a corresponding histogram value.

[samuong, 2017/02/14 00:19:17]

I'm not very familiar with histograms. I've added an entry in
tools/metrics/histograms/histograms.xml, does this need anything else?

[Peter Kasting, 2017/02/14 00:23:17]

I think that's all you need, but you'll need signoff from a histograms OWNER
(and they can double-check).

   };
 
   // Describes navigation events, used to decide whether infobars should be
   // dismissed.
   struct NavigationDetails {
     // Unique identifier for the entry.
     int entry_id;
     // True if it is a navigation to a different page (as opposed to in-page).
     bool is_navigation_to_different_page;
     // True if the entry replaced the existing one.
@@ skipping 89 matching lines @@
 
   // The ID of the active navigation entry at the time we became owned.
   int nav_entry_id_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarDelegate);
 };
 
 }  // namespace infobars
 
 #endif  // COMPONENTS_INFOBARS_CORE_INFOBAR_DELEGATE_H_