Run the disk cache tests in scoped temporary directories instead of a fixed directory so that they …

net/disk_cache/disk_cache_test_util.h

Index: net/disk_cache/disk_cache_test_util.h
===================================================================
--- net/disk_cache/disk_cache_test_util.h	(revision 151735)
+++ net/disk_cache/disk_cache_test_util.h	(working copy)
@@ -19,9 +19,6 @@
 // Deletes all file son the cache.
 bool DeleteCache(const FilePath& path);
 
-// Gets the path to the cache test folder.
-FilePath GetCacheFilePath();
-
 // Fills buffer with random values (may contain nulls unless no_nulls is true).
 void CacheTestFillBuffer(char* buffer, size_t len, bool no_nulls);
 
@@ -31,23 +28,6 @@
 // Returns true if the cache is not corrupt.
 bool CheckCacheIntegrity(const FilePath& path, bool new_eviction, uint32 mask);
 
-// Helper class which ensures that the cache dir returned by GetCacheFilePath
-// exists and is clear in ctor and that the directory gets deleted in dtor.
-class ScopedTestCache {
- public:
-  explicit ScopedTestCache(const FilePath& path);
-  // Use a specific folder name.
-  explicit ScopedTestCache(const std::string& name);
-  ~ScopedTestCache();
-
-  FilePath path() const { return path_; }
-
- private:
-  const FilePath path_;  // Path to the cache test folder.
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedTestCache);
-};
-
 // -----------------------------------------------------------------------
 
 // Simple helper to deal with the message loop on a test.