Disables flaky test DiskCacheBackendTest.SimpleCacheEnumerationCorruption

net/disk_cache/backend_unittest.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 <stdint.h>
 
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/run_loop.h"
@@ skipping 3735 matching lines @@
   DoomEntry(key_to_delete);
   keys_to_match.erase(key_to_delete);
   key_pool.erase(key_to_delete);
   ASSERT_TRUE(EnumerateAndMatchKeys(-1, iter.get(), &keys_to_match, &count));
   iter.reset();
 
   EXPECT_EQ(key_pool.size(), count);
   EXPECT_TRUE(keys_to_match.empty());
 }
 
+// This test is flaky on Android Marshmallow crbug.com/638891.
+#if !defined(OS_ANDROID)
 // Tests that enumerations are not affected by corrupt files.
 TEST_F(DiskCacheBackendTest, SimpleCacheEnumerationCorruption) {
   SetSimpleCacheMode();
   InitCache();
   // Create a corrupt entry. The write/read sequence ensures that the entry will
   // have been created before corrupting the platform files, in the case of
   // optimistic operations.
   const std::string key = "the key";
   disk_cache::Entry* corrupted_entry;
 
@@ skipping 17 matching lines @@
   // Check that enumeration returns all entries but the corrupt one.
   std::set<std::string> keys_to_match(key_pool);
   std::unique_ptr<TestIterator> iter = CreateIterator();
   size_t count = 0;
   ASSERT_TRUE(EnumerateAndMatchKeys(-1, iter.get(), &keys_to_match, &count));
   iter.reset();
 
   EXPECT_EQ(key_pool.size(), count);
   EXPECT_TRUE(keys_to_match.empty());
 }
+#endif
 
 // Tests that enumerations don't leak memory when the backend is destructed
 // mid-enumeration.
 TEST_F(DiskCacheBackendTest, SimpleCacheEnumerationDestruction) {
   SetSimpleCacheMode();
   InitCache();
   std::set<std::string> key_pool;
   ASSERT_TRUE(CreateSetOfRandomEntries(&key_pool));
 
   std::unique_ptr<TestIterator> iter = CreateIterator();
@@ skipping 63 matching lines @@
   // because that would advance the cache directory mtime and invalidate the
   // index.
   entry2->Doom();
   entry2->Close();
 
   DisableFirstCleanup();
   InitCache();
   EXPECT_EQ(disk_cache::SimpleIndex::INITIALIZE_METHOD_LOADED,
             simple_cache_impl_->index()->init_method());
 }