Http Cache: Add code for simulating an infinite HTTP cache.

net/http/http_cache.cc

Index: net/http/http_cache.cc
===================================================================
--- net/http/http_cache.cc	(revision 156633)
+++ net/http/http_cache.cc	(working copy)
@@ -352,7 +352,7 @@
     CreateBackend(NULL, net::CompletionCallback());
   }
 
-  HttpCache::Transaction* trans = new HttpCache::Transaction(this, NULL);
+  HttpCache::Transaction* trans = new HttpCache::Transaction(this, NULL, NULL);
   MetadataWriter* writer = new MetadataWriter(trans);
 
   // The writer will self destruct when done.
@@ -390,7 +390,8 @@
 void HttpCache::InitializeInfiniteCache(const FilePath& path) {
   if (base::FieldTrialList::FindFullName("InfiniteCache") != "Yes")
     return;
-  // TODO(rvargas): initialize the infinite cache
+  // To be enabled after everything is fully wired.
+  // infinite_cache_.Init(path);
 }
 
 int HttpCache::CreateTransaction(scoped_ptr<HttpTransaction>* trans,
@@ -401,7 +402,10 @@
     CreateBackend(NULL, net::CompletionCallback());
   }
 
-  trans->reset(new HttpCache::Transaction(this, delegate));
+  InfiniteCacheTransaction* infinite_cache_transaction =
+      infinite_cache_.CreateInfiniteCacheTransaction();
+  trans->reset(new HttpCache::Transaction(this, delegate,
+                                          infinite_cache_transaction));
   return OK;
 }