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

chrome/browser/download/download_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 <sstream>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 256 matching lines @@
     content::DownloadInterruptReason reason;
     bool show_download_item;  // True if the download item appears on the shelf.
     bool should_redirect_to_documents;  // True if we save it in "My Documents".
   };
 
   struct FileErrorInjectInfo {
     DownloadInfo download_info;
     content::TestFileErrorInjector::FileErrorInfo error_info;
   };
 
-  DownloadTest() {
-    EnableDOMAutomation();
-  }
+  DownloadTest() {}
 
   void SetUpOnMainThread() OVERRIDE {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&chrome_browser_net::SetUrlRequestMocksEnabled, true));
     ASSERT_TRUE(InitialSetup());
   }
 
   // Returning false indicates a failure of the setup, and should be asserted
   // in the caller.
@@ skipping 2208 matching lines @@
   GetDownloads(browser(), &download_items);
   ASSERT_EQ(1u, download_items.size());
   ASSERT_EQ(test_server()->GetURL("echoheader?Referer"),
             download_items[0]->GetOriginalUrl());
 
   // Check that the file contains the expected referrer.
   FilePath file(download_items[0]->GetFullPath());
   std::string expected_contents = test_server()->GetURL("").spec();
   ASSERT_TRUE(VerifyFile(file, expected_contents, expected_contents.length()));
 }