Attempt to fix the chrome frame net tests failures on the builders. There see...

chrome_frame/test/net/test_automation_provider.cc

Index: chrome_frame/test/net/test_automation_provider.cc
===================================================================
--- chrome_frame/test/net/test_automation_provider.cc	(revision 52168)
+++ chrome_frame/test/net/test_automation_provider.cc	(working copy)
@@ -74,8 +74,8 @@
 
     // We could also check if the current thread is our TestUrlRequest thread
     // and only intercept requests that belong to that thread.
-    if (g_provider_instance_ && request->GetUserData(NULL) == NULL) {
-      DCHECK(g_provider_instance_->tab_handle_ != -1);
+    if (g_provider_instance_ && request->GetUserData(NULL) == NULL &&
+        g_provider_instance_->tab_handle_ != -1) {
       // We generate our own request id which is also what
       // ResourceDispatcherHost does (well, the id is actually generated by
       // ResourceDispatcher).  Since these requests are divided into with