Http Cache: Keep track of whether we are doing byte range

net/http/http_cache_unittest.cc

Index: net/http/http_cache_unittest.cc
===================================================================
--- net/http/http_cache_unittest.cc	(revision 92897)
+++ net/http/http_cache_unittest.cc	(working copy)
@@ -2261,7 +2261,7 @@
   transaction.request_headers = "Range: bytes = 5-";
   RunTransactionTest(cache.http_cache(), transaction);
 
-  EXPECT_EQ(3, cache.network_layer()->transaction_count());
+  EXPECT_EQ(2, cache.network_layer()->transaction_count());
   EXPECT_EQ(1, cache.disk_cache()->open_count());
   EXPECT_EQ(2, cache.disk_cache()->create_count());
 }