Always enable dom automation for browser_tests. This avoids developers having to call EnableDOMAuto…

chrome/browser/instant/instant_browsertest.cc

 // Copyright (c) 2012 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 "base/command_line.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/instant/instant_controller.h"
@@ skipping 34 matching lines @@
 #if defined(OS_LINUX) && !defined(USE_ASH)
 #define MAYBE(TestName) DISABLED_ ## TestName
 #elif defined(OS_WIN)
 #define MAYBE(TestName) FLAKY_ ## TestName
 #else
 #define MAYBE(TestName) TestName
 #endif
 
 class InstantTest : public InProcessBrowserTest {
  public:
-  InstantTest() {
-    EnableDOMAutomation();
-  }
+  InstantTest() {}
 
   void EnableInstant() {
     InstantController::Enable(browser()->profile());
   }
 
   void SetupInstantProvider(const std::string& page) {
     Profile* profile = browser()->profile();
     TemplateURLService* model =
         TemplateURLServiceFactory::GetForProfile(profile);
 
@@ skipping 769 matching lines @@
   DetermineInstantSupport();
   SearchAndWaitForPreviewToShow();
 
   // Now there should be three rows, the third being the instant preview.
   TaskManagerBrowserTestUtil::WaitForResourceChange(3);
   string16 prefix = l10n_util::GetStringFUTF16(
       IDS_TASK_MANAGER_INSTANT_PREVIEW_PREFIX, string16());
   string16 title = task_manager->GetResourceTitle(2);
   EXPECT_TRUE(StartsWith(title, prefix, true)) << title << " vs " << prefix;
 }