SimpleCache: open with fewer seeks.

net/disk_cache/simple/simple_test_util.h

Index: net/disk_cache/simple/simple_test_util.h
diff --git a/net/disk_cache/simple/simple_test_util.h b/net/disk_cache/simple/simple_test_util.h
index 95ab0550e35e74f31c75c9e99fde64f7244b7c19..cef6b47c8680866e35c0b3507fe6ee2e03d96175 100644
--- a/net/disk_cache/simple/simple_test_util.h
+++ b/net/disk_cache/simple/simple_test_util.h
@@ -43,6 +43,14 @@ class ImmutableArray {
 bool CreateCorruptFileForTests(const std::string& key,
                                const base::FilePath& cache_path);
 
+// Removes the key SHA256 from an entry.
+bool RemoveKeySHA256FromEntry(const std::string& key,
+                              const base::FilePath& cache_path);
+
+// Modifies the key SHA256 from an entry so that it is corrupt.
+bool CorruptKeySHA256FromEntry(const std::string& key,
+                               const base::FilePath& cache_path);
+
 }  // namespace simple_backend
 }  // namespace disk_cache