**STILLBAKING** Decouple disk cache tests from backends.

net/disk_cache/disk_cache_test_util.h

 // 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.
 
 #ifndef NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
 #define NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/timer/timer.h"
 #include "base/tuple.h"
 #include "build/build_config.h"
 
+// Disables a parameterized test if a quirk condition is met.
+#define TEST_DISABLED_IF(cond) \
+  do { \
+    if (cond) { \
+      LOG(INFO) << "Test is disabled."; \
+      return; \
+    } \
+  } while (false)
+
 // Re-creates a given test file inside the cache test folder.
 bool CreateCacheTestFile(const base::FilePath& name);
 
 // Deletes all file son the cache.
 bool DeleteCache(const base::FilePath& path);
 
 // Fills buffer with random values (may contain nulls unless no_nulls is true).
 void CacheTestFillBuffer(char* buffer, size_t len, bool no_nulls);
 
 // Generates a random key of up to 200 bytes.
 std::string GenerateKey(bool same_length);
 
-// Returns true if the cache is not corrupt.
-bool CheckCacheIntegrity(const base::FilePath& path, bool new_eviction,
-                         uint32 mask);
-
 // -----------------------------------------------------------------------
 
 // Simple helper to deal with the message loop on a test.
 class MessageLoopHelper {
  public:
   MessageLoopHelper();
   ~MessageLoopHelper();
 
   // Run the message loop and wait for num_callbacks before returning. Returns
   // false if we are waiting to long. Each callback that will be waited on is
@@ skipping 54 matching lines @@
   int last_result() const { return last_result_; }
 
  private:
   MessageLoopHelper* helper_;
   int reuse_;
   int last_result_;
   DISALLOW_COPY_AND_ASSIGN(CallbackTest);
 };
 
 #endif  // NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_