Disable info bar animations during automated testing.

chrome/browser/infobars/infobar_service.cc

 // Copyright (c) 2013 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.
 
 #include "chrome/browser/infobars/infobar_service.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/chrome_notification_types.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/render_messages.h"
 #include "components/infobars/core/infobar.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/base/page_transition_types.h"
 
 
@@ skipping 22 matching lines @@
     return NULL;
   InfoBarService* infobar_service =
       static_cast<InfoBarService*>(infobar->owner());
   return infobar_service->web_contents();
 }
 
 InfoBarService::InfoBarService(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       ignore_next_reload_(false) {
   DCHECK(web_contents);
+  // Info bar animations cause viewport resizes. Disable them for automated

[Peter Kasting, 2017/02/23 00:33:55]

Nit: Infobar

[samuong, 2017/02/23 00:45:26]

Done.

+  // tests, since they could lead to flakiness.
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableAutomation))
+    set_animations_enabled(false);
 }
 
 InfoBarService::~InfoBarService() {
   ShutDown();
 }
 
 int InfoBarService::GetActiveEntryID() {
   content::NavigationEntry* active_entry =
       web_contents()->GetController().GetActiveEntry();
   return active_entry ? active_entry->GetUniqueID() : 0;
@@ skipping 60 matching lines @@
   // A normal user click on an infobar URL will result in a CURRENT_TAB
   // disposition; turn that into a NEW_FOREGROUND_TAB so that we don't end up
   // smashing the page the user is looking at.
   web_contents()->OpenURL(
       content::OpenURLParams(url, content::Referrer(),
                              (disposition == WindowOpenDisposition::CURRENT_TAB)
                                  ? WindowOpenDisposition::NEW_FOREGROUND_TAB
                                  : disposition,
                              ui::PAGE_TRANSITION_LINK, false));
 }