Revert of Disable flaky tests related to "Cannot read property 'textdirection' of undefined"

chrome/browser/ui/find_bar/find_bar_host_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/file_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 272 matching lines @@
     ui_test_utils::NavigateToURL(browser(), urls[i]);
     EXPECT_EQ(1, FindInPageWchar(web_contents, L"cat",
                                  kFwd, kIgnoreCase, NULL));
     EXPECT_EQ(0, FindInPageWchar(web_contents, L"bat",
                                  kFwd, kIgnoreCase, NULL));
   }
 }
 
 // Verify search for text within special URLs such as chrome:history,
 // chrome://downloads, data directory
-#if defined(OS_WIN) || defined(OS_MACOSX)
-// Disabled due to crbug.com/175711 (win) and crbug.com/396752 (mac).
+#if defined(OS_WIN)
+// Disabled due to crbug.com/175711
 #define MAYBE_SearchWithinSpecialURL \
         DISABLED_SearchWithinSpecialURL
 #else
 #define MAYBE_SearchWithinSpecialURL \
         SearchWithinSpecialURL
 #endif
 IN_PROC_BROWSER_TEST_F(FindInPageControllerTest, MAYBE_SearchWithinSpecialURL) {
   WebContents* web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
 
@@ skipping 1310 matching lines @@
   ASSERT_EQ(result, SIMPLEREGION);
   bool rects_equal =
       region_before.left == region_after.left &&
       region_before.top == region_after.top &&
       region_before.right == region_after.right &&
       region_before.bottom == region_after.bottom;
   ASSERT_FALSE(rects_equal);
 }
 
 #endif