Disable flaky TestCleanUpCacheEntries on Linux

chrome/browser/media/router/discovery/dial/device_description_service_unittest.cc

 // Copyright 2017 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/media/router/discovery/dial/device_description_service.h"
 
 #include "base/strings/stringprintf.h"
 #include "base/test/mock_callback.h"
 #include "chrome/browser/media/router/discovery/dial/device_description_fetcher.h"
 #include "chrome/browser/media/router/discovery/dial/dial_device_data.h"
@@ skipping 229 matching lines @@
 
   EXPECT_CALL(mock_error_cb_, Run(_, _)).Times(3);
   device_description_service()->OnDeviceDescriptionFetchError(device_data_1,
                                                               "");
   device_description_service()->OnDeviceDescriptionFetchError(device_data_2,
                                                               "");
   device_description_service()->OnDeviceDescriptionFetchError(device_data_3,
                                                               "");
 }
 
-TEST_F(DeviceDescriptionServiceTest, TestCleanUpCacheEntries) {
+#if defined(OS_LINUX)
+#define MAYBE_TestCleanUpCacheEntries DISABLED_TestCleanUpCacheEntries
+#else
+#define MAYBE_TestCleanUpCacheEntries TestCleanUpCacheEntries
+#endif
+
+TEST_F(DeviceDescriptionServiceTest, MAYBE_TestCleanUpCacheEntries) {
   DialDeviceData device_data_1 = CreateDialDeviceData(1);
   DialDeviceData device_data_2 = CreateDialDeviceData(2);
   DialDeviceData device_data_3 = CreateDialDeviceData(3);
 
   AddToCache(device_data_1.label(), ParsedDialDeviceDescription(),
              true /* expired */);
   AddToCache(device_data_2.label(), ParsedDialDeviceDescription(),
              true /* expired */);
   AddToCache(device_data_3.label(), ParsedDialDeviceDescription(),
              false /* expired */);
@@ skipping 58 matching lines @@
   OnDeviceDescriptionFetchComplete(1);
 
   EXPECT_TRUE(device_description_service()->parser_);
   OnDeviceDescriptionFetchComplete(2);
   OnDeviceDescriptionFetchComplete(3);
 
   EXPECT_FALSE(device_description_service()->parser_);
 }
 
 }  // namespace media_router