Add a quic_in_memory_cache_test data file.

net/tools/quic/quic_in_memory_cache.h

Index: net/tools/quic/quic_in_memory_cache.h
diff --git a/net/tools/quic/quic_in_memory_cache.h b/net/tools/quic/quic_in_memory_cache.h
index 600bb1951760c58cca738c7e5ef2da3d02f954a9..d854ebe8a3862cb67a266f6e18832c08f213de02 100644
--- a/net/tools/quic/quic_in_memory_cache.h
+++ b/net/tools/quic/quic_in_memory_cache.h
@@ -22,6 +22,10 @@ extern std::string FLAGS_quic_in_memory_cache_dir;
 
 class QuicServer;
 
+namespace test {
+class QuicInMemoryCacheTest;
+}
+
 // In-memory cache for HTTP responses.
 // Reads from disk cache generated by:
 // `wget -p --save_headers <url>`
@@ -66,6 +70,7 @@ class QuicInMemoryCache {
   void ResetForTests();
 
  private:
+  friend class test::QuicInMemoryCacheTest;

[Ryan Hamilton, 2013/07/04 14:46:03]

If you make ResetForTests call Initialize, then you won't need to add this
friend.

[honghaiz, 2013/07/04 17:34:04]

Done.

   typedef base::hash_map<std::string, Response*> ResponseMap;
 
 
@@ -73,6 +78,7 @@ class QuicInMemoryCache {
   friend struct DefaultSingletonTraits<QuicInMemoryCache>;
   ~QuicInMemoryCache();
 
+  void Initialize();
   std::string GetKey(const BalsaHeaders& response_headers) const;
 
   // Cached responses.