GTTF: Make net_unittests run successfully with parallel test launcher

net/disk_cache/stress_cache.cc

Index: net/disk_cache/stress_cache.cc
diff --git a/net/disk_cache/stress_cache.cc b/net/disk_cache/stress_cache.cc
index 98dcbe1b079b8babf51e6ac11ca79316924865ea..51fda4c8fcd6dcd550e86d03ac49d149b9bdc559 100644
--- a/net/disk_cache/stress_cache.cc
+++ b/net/disk_cache/stress_cache.cc
@@ -29,6 +29,7 @@
 #include "base/command_line.h"
 #include "base/debug_util.h"
 #include "base/file_path.h"
+#include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
@@ -50,6 +51,16 @@ using base::Time;
 const int kError = -1;
 const int kExpectedCrash = 100;
 
+FilePath GetStressCacheFilePath() {
+  FilePath path;
+  PathService::Get(base::DIR_TEMP, &path);  // Ignore return value;
+  path = path.AppendASCII("cache_test_stress");
+  if (!file_util::PathExists(path))
+    file_util::CreateDirectory(path);
+
+  return path;
+}
+
 // Starts a new process.
 int RunSlave(int iteration) {
   FilePath exe;
@@ -92,7 +103,7 @@ int MasterCode() {
 // to know which instance of the application wrote them.
 void StressTheCache(int iteration) {
   int cache_size = 0x800000;  // 8MB
-  FilePath path = GetCacheFilePath().InsertBeforeExtensionASCII("_stress");
+  FilePath path = GetStressCacheFilePath();
 
   base::Thread cache_thread("CacheThread");
   if (!cache_thread.StartWithOptions(