GTTF: Make net_unittests run successfully with parallel test launcher

net/disk_cache/mapped_file_unittest.cc

 // Copyright (c) 2006-2008 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/basictypes.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "net/disk_cache/disk_cache_test_base.h"
 #include "net/disk_cache/disk_cache_test_util.h"
 #include "net/disk_cache/mapped_file.h"
@@ skipping 43 matching lines @@
       iterations = 0;
   }
 #elif defined(OS_POSIX)
   // TODO(rvargas): Do something when async IO is implemented.
 #endif
 }
 
 }  // namespace
 
 TEST_F(DiskCacheTest, MappedFile_SyncIO) {
-  FilePath filename = GetCacheFilePath().AppendASCII("a_test");
+  ScopedTestCache test_cache;
+  FilePath filename = test_cache.path().AppendASCII("a_test");
+
   scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
   ASSERT_TRUE(CreateCacheTestFile(filename));
   ASSERT_TRUE(file->Init(filename, 8192));
 
   char buffer1[20];
   char buffer2[20];
   CacheTestFillBuffer(buffer1, sizeof(buffer1), false);
   base::strlcpy(buffer1, "the data", arraysize(buffer1));
   EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 8192));
   EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 8192));
   EXPECT_STREQ(buffer1, buffer2);
 }
 
 TEST_F(DiskCacheTest, MappedFile_AsyncIO) {
-  FilePath filename = GetCacheFilePath().AppendASCII("a_test");
+  ScopedTestCache test_cache;
+  FilePath filename = test_cache.path().AppendASCII("a_test");
+
   scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
   ASSERT_TRUE(CreateCacheTestFile(filename));
   ASSERT_TRUE(file->Init(filename, 8192));
 
   FileCallbackTest callback(1);
   g_cache_tests_error = false;
   g_cache_tests_max_id = 0;
   g_cache_tests_received = 0;
 
   MessageLoopHelper helper;
@@ skipping 14 matching lines @@
               &completed));
   if (!completed)
     expected++;
 
   helper.WaitUntilCacheIoFinished(expected);
 
   EXPECT_EQ(expected, g_cache_tests_received);
   EXPECT_FALSE(g_cache_tests_error);
   EXPECT_STREQ(buffer1, buffer2);
 }