HttpServerProperties - Don't persist if SetSupportsQuic is called with

net/http/http_server_properties_manager_unittest.cc

 // Copyright 2014 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/http/http_server_properties_manager.h"
 
 #include "base/basictypes.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_registry_simple.h"
@@ skipping 587 matching lines @@
 TEST_F(HttpServerPropertiesManagerTest, SupportsQuic) {
   ExpectPrefsUpdate();
   ExpectScheduleUpdatePrefsOnNetworkThread();
 
   IPAddressNumber address;
   EXPECT_FALSE(http_server_props_manager_->GetSupportsQuic(&address));
 
   IPAddressNumber actual_address;
   CHECK(ParseIPLiteralToNumber("127.0.0.1", &actual_address));
   http_server_props_manager_->SetSupportsQuic(true, actual_address);
+  // ExpectScheduleUpdatePrefsOnNetworkThread() should be called only once.
+  http_server_props_manager_->SetSupportsQuic(true, actual_address);
 
   // Run the task.
   base::RunLoop().RunUntilIdle();
   Mock::VerifyAndClearExpectations(http_server_props_manager_.get());
 
   EXPECT_TRUE(http_server_props_manager_->GetSupportsQuic(&address));
   EXPECT_EQ(actual_address, address);
 }
 
 TEST_F(HttpServerPropertiesManagerTest, ServerNetworkStats) {
@@ skipping 269 matching lines @@
   // Run the task after shutdown, but before deletion.
   base::RunLoop().RunUntilIdle();
   Mock::VerifyAndClearExpectations(http_server_props_manager_.get());
   http_server_props_manager_.reset();
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace
 
 }  // namespace net