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

chrome/browser/net/load_timing_observer_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 "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents.h"
 #include "googleurl/src/gurl.h"
 #include "net/test/test_server.h"
 
 class LoadTimingObserverTest : public InProcessBrowserTest {
  public:
-  LoadTimingObserverTest() {
-    EnableDOMAutomation();
-  }
-
- protected:
+  LoadTimingObserverTest() {}
 };
 
 // http://crbug.com/102030
 IN_PROC_BROWSER_TEST_F(LoadTimingObserverTest, FLAKY_CacheHitAfterRedirect) {
   ASSERT_TRUE(test_server()->Start());
   GURL cached_page = test_server()->GetURL("cachetime");
   std::string redirect = "server-redirect?" + cached_page.spec();
   ui_test_utils::NavigateToURL(browser(), cached_page);
   ui_test_utils::NavigateToURL(browser(), test_server()->GetURL(redirect));
 
   int response_start = 0;
   int response_end = 0;
   content::RenderViewHost* render_view_host =
       chrome::GetActiveWebContents(browser())->GetRenderViewHost();
   ASSERT_TRUE(ui_test_utils::ExecuteJavaScriptAndExtractInt(
       render_view_host, L"",
       L"window.domAutomationController.send("
       L"window.performance.timing.responseStart - "
       L"window.performance.timing.navigationStart)", &response_start));
   ASSERT_TRUE(ui_test_utils::ExecuteJavaScriptAndExtractInt(
       render_view_host, L"",
       L"window.domAutomationController.send("
       L"window.performance.timing.responseEnd - "
       L"window.performance.timing.navigationStart)", &response_end));
   EXPECT_LE(response_start, response_end);
 }