[net] Change order of RequestPriority to natural: higher > lower

net/base/host_resolver_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/host_resolver_impl.h"
 
 #if defined(OS_WIN)
 #include <Winsock2.h>
 #elif defined(OS_POSIX)
 #include <netdb.h>
@@ skipping 371 matching lines @@
     return highest_priority_;
   }
 
   size_t total_count() const {
     return total_count_;
   }
 
   void Add(RequestPriority req_priority) {
     ++total_count_;
     ++counts_[req_priority];
-    if (highest_priority_ > req_priority)
+    if (highest_priority_ < req_priority)
       highest_priority_ = req_priority;
   }
 
   void Remove(RequestPriority req_priority) {
     DCHECK_GT(total_count_, 0u);
     DCHECK_GT(counts_[req_priority], 0u);
     --total_count_;
     --counts_[req_priority];
     size_t i;
-    for (i = highest_priority_; i < NUM_PRIORITIES && !counts_[i]; ++i);
+    for (i = highest_priority_; i > MINIMUM_PRIORITY && !counts_[i]; --i);
     highest_priority_ = static_cast<RequestPriority>(i);
 
-    // In absence of requests set default.
-    if (highest_priority_ == NUM_PRIORITIES) {
-      DCHECK_EQ(0u, total_count_);
-      highest_priority_ = IDLE;
-    }
+    // In absence of requests, default to MINIMUM_PRIORITY.
+    if (total_count_ == 0)
+      DCHECK_EQ(MINIMUM_PRIORITY, highest_priority_);
   }
 
  private:
   RequestPriority highest_priority_;
   size_t total_count_;
   size_t counts_[NUM_PRIORITIES];
 };
 
 //-----------------------------------------------------------------------------
 
@@ skipping 1533 matching lines @@
 
   if (self && dns_config.IsValid())
     TryServingAllJobsFromHosts();
 }
 
 bool HostResolverImpl::HaveDnsConfig() const {
   return (dns_client_.get() != NULL) && (dns_client_->GetConfig() != NULL);
 }
 
 }  // namespace net