Re-enable WebViewPointerLockInteractiveTest.PointerLock_PointerLockLostWithFocus test.

chrome/browser/apps/guest_view/web_view_interactive_browsertest.cc

 // Copyright 2013 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 <stddef.h>
 
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
@@ skipping 1111 matching lines @@
 
   ASSERT_TRUE(ready_back_key_listener.WaitUntilSatisfied());
   SendBackShortcutToPlatformApp();
 
   ASSERT_TRUE(ready_forward_key_listener.WaitUntilSatisfied());
   SendForwardShortcutToPlatformApp();
 
   ASSERT_TRUE(done_listener.WaitUntilSatisfied());
 }
 
-// Flaky on Linux: crbug.com/678267
-#if defined(OS_LINUX)
-#define MAYBE_PointerLock_PointerLockLostWithFocus \
-  DISABLED_PointerLock_PointerLockLostWithFocus
-#else
-#define MAYBE_PointerLock_PointerLockLostWithFocus \
-  PointerLock_PointerLockLostWithFocus
-#endif
 IN_PROC_BROWSER_TEST_P(WebViewPointerLockInteractiveTest,
-                       MAYBE_PointerLock_PointerLockLostWithFocus) {
+                       PointerLock_PointerLockLostWithFocus) {
   TestHelper("testPointerLockLostWithFocus",
              "web_view/pointerlock",
              NO_TEST_SERVER);
 }
 
 // Disable this on mac, throws an assertion failure on teardown which
 // will result in flakiness:
 //
 // "not is fullscreen state"
 // "*** Assertion failure in -[_NSWindowFullScreenTransition
@@ skipping 356 matching lines @@
   ASSERT_TRUE(ui_test_utils::SendKeyPressToWindowSync(
       GetPlatformAppWindow(), ui::VKEY_Z, false, false, false, false));
 
   next_step_listener.Reset();
   EXPECT_TRUE(content::ExecuteScript(
       embedder_web_contents(),
       "window.runCommand('testKeyboardFocusRunNextStep', 'aBcxYz');"));
 
   ASSERT_TRUE(next_step_listener.WaitUntilSatisfied());
 }