Http cache: Fix DCHECK with POSTs and a disabled cache.

net/http/http_cache_transaction.cc

Index: net/http/http_cache_transaction.cc
diff --git a/net/http/http_cache_transaction.cc b/net/http/http_cache_transaction.cc
index 5441e90f33ffa7d27377bb07dac4a67ab954338c..c39a38a77a0b6d9ef0f8a68eb1b04dd086e7db58 100644
--- a/net/http/http_cache_transaction.cc
+++ b/net/http/http_cache_transaction.cc
@@ -1208,6 +1208,7 @@ int HttpCache::Transaction::DoSuccessfulSendRequest() {
     UpdateTransactionPattern(PATTERN_ENTRY_NOT_CACHED);
   }
 
+  // Invalidate any cached GET with a successful PUT or DELETE.
   if (mode_ == WRITE &&
       (request_->method == "PUT" || request_->method == "DELETE")) {
     if (NonErrorResponse(new_response->headers->response_code())) {
@@ -1219,7 +1220,9 @@ int HttpCache::Transaction::DoSuccessfulSendRequest() {
     mode_ = NONE;
   }
 
-  if (request_->method == "POST" &&
+  // Invalidate any cached GET with a successful POST.
+  if (!(effective_load_flags_ & LOAD_DISABLE_CACHE) &&
+      request_->method == "POST" &&
       NonErrorResponse(new_response->headers->response_code())) {
     cache_->DoomMainEntryForUrl(request_->url);
   }