Enable SitePerProcessBrowserTest.SurfaceHitTestPointerEventsNone on

content/browser/site_per_process_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 "content/browser/site_per_process_browsertest.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1308 matching lines @@
   EXPECT_FALSE(main_frame_monitor.EventWasReceived());
 }
 
 // This test tests that browser process hittesting ignores frames with
 // pointer-events: none.
 #if defined(OS_ANDROID)
 // Browser process hit testing is not implemented on Android.
 // https://crbug.com/491334
 #define MAYBE_SurfaceHitTestPointerEventsNone \
   DISABLED_SurfaceHitTestPointerEventsNone
-#elif defined(THREAD_SANITIZER)
-// Flaky on TSAN. https://crbug.com/582277
-#define MAYBE_SurfaceHitTestPointerEventsNone \
-  DISABLED_SurfaceHitTestPointerEventsNone
 #else
 #define MAYBE_SurfaceHitTestPointerEventsNone SurfaceHitTestPointerEventsNone
 #endif
 IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
                        MAYBE_SurfaceHitTestPointerEventsNone) {
   GURL main_url(embedded_test_server()->GetURL(
       "/frame_tree/page_with_positioned_frame_pointer-events_none.html"));
   EXPECT_TRUE(NavigateToURL(shell(), main_url));
 
   // It is safe to obtain the root frame tree node here, as it doesn't change.
@@ skipping 7484 matching lines @@
 
   // Ensure that the iframe reuses its parent's process.
   EXPECT_EQ(srcdoc_url, child->current_url());
   EXPECT_EQ(root->current_frame_host()->GetSiteInstance(),
             child->current_frame_host()->GetSiteInstance());
   EXPECT_EQ(root->current_frame_host()->GetProcess(),
             child->current_frame_host()->GetProcess());
 }
 
 }  // namespace content