Revert 55071 - Reland 54771 (and 54795) To enable TCP Preconnection by default

Leaks reported with this CL.

http://build.chromium.org/buildbot/memory/builders/Linux%20Heapcheck/builds/6130/steps/heapcheck%20test:%20net/logs/stdio

Eg.

Leak of 24 bytes in 1 objects allocated from:
	 @ 84aece net::SSLClientSocketNSS::BufferRecv
	 @ 84b161 net::SSLClientSocketNSS::DoTransportIO
	 @ 84ca1f net::SSLClientSocketNSS::DoHandshakeLoop
	 @ 84ca6b net::SSLClientSocketNSS::OnHandshakeIOComplete
	 @ 84cadc net::SSLClientSocketNSS::OnRecvComplete
	 @ 84cbb0 net::SSLClientSocketNSS::BufferRecvComplete
	 @ 84ea4b void DispatchToMethod
	 @ 84ea7b CallbackImpl::RunWithParams
	 @ 4b3a10 CallbackRunner::Run
	 @ 853e7e net::TCPClientSocketLibevent::DoReadCallback
	 @ 85426f net::TCPClientSocketLibevent::DidCompleteRead
	 @ 856a5c net::TCPClientSocketLibevent::ReadWatcher::OnFileCanReadWithoutBlocking
	 @ 93d8fd base::MessagePumpLibevent::FileDescriptorWatcher::OnFileCanReadWithoutBlocking
	 @ 93d966 base::MessagePumpLibevent::OnLibeventNotification
	 @ 9da639 event_process_active
	 @ 9da923 event_base_loop
	 @ 93dfd0 base::MessagePumpLibevent::Run
	 @ 8f2873 MessageLoop::RunInternal
	 @ 8f2893 MessageLoop::RunHandler
	 @ 8f2938 MessageLoop::Run
	 @ 44b7f9 TestCompletionCallback::WaitForResult
	 @ 6a1ee6 SSLClientSocketTest_ConnectMismatched_Test::TestBody
	 @ 961831 testing::Test::Run
	 @ 965026 testing::internal::TestInfoImpl::Run
	 @ 96515c testing::TestCase::Run
	 @ 965bbe testing::internal::UnitTestImpl::RunAllTests
	 @ 965d35 testing::UnitTest::Run
	 @ 4a4bf7 TestSuite::Run
	 @ 4a3b6d main
	 @ 2adff5bb11c4 __libc_start_main

Suppression:
{
   <insert_a_suppression_name_here>
   Heapcheck:Leak
   fun:net::SSLClientSocketNSS::BufferRecv
   fun:net::SSLClientSocketNSS::DoTransportIO
   fun:net::SSLClientSocketNSS::DoHandshakeLoop
   fun:net::SSLClientSocketNSS::OnHandshakeIOComplete
   fun:net::SSLClientSocketNSS::OnRecvComplete
   fun:net::SSLClientSocketNSS::BufferRecvComplete
   fun:void DispatchToMethod
   fun:CallbackImpl::RunWithParams
   fun:CallbackRunner::Run
   fun:net::TCPClientSocketLibevent::DoReadCallback
   fun:net::TCPClientSocketLibevent::DidCompleteRead
   fun:net::TCPClientSocketLibevent::ReadWatcher::OnFileCanReadWithoutBlocking
   fun:base::MessagePumpLibevent::FileDescriptorWatcher::OnFileCanReadWithoutBlocking
   fun:base::MessagePumpLibevent::OnLibeventNotification
   fun:event_process_active
   fun:event_base_loop
   fun:base::MessagePumpLibevent::Run
   fun:MessageLoop::RunInternal
   fun:MessageLoop::RunHandler
   fun:MessageLoop::Run
   fun:TestCompletionCallback::WaitForResult
   fun:SSLClientSocketTest_ConnectMismatched_Test::TestBody
   fun:testing::Test::Run
   fun:testing::internal::TestInfoImpl::Run
   fun:testing::TestCase::Run
   fun:testing::internal::UnitTestImpl::RunAllTests
   fun:testing::UnitTest::Run
   fun:TestSuite::Run
   fun:main
   fun:__libc_start_main
}




I added defensive code in ClientSocketHandle::ReleaseSocket(),
which should preclude the crash that was reported on the
stability bot.

I added a second call to ReleaseSocket() from
~ClientSocketHandle to ensure that we updated the
related ClientSocket when we are torn down.

r=mbelshe
Review URL: http://codereview.chromium.org/3071022

TBR=jar@chromium.org

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@55090 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 6 deletions

diff --git a/chrome/browser/browser_main.cc b/chrome/browser/browser_main.cc
index f35779a..04fd26b 100644
--- a/chrome/browser/browser_main.cc
+++ b/chrome/browser/browser_main.cc
@@ -1199,15 +1199,10 @@ int BrowserMain(const MainFunctionParams& parameters) {
   // pre-resolution, as well as TCP/IP connection pre-warming.
   // This also registers an observer to discard data when closing incognito
   // mode.
-  bool preconnect_enabled = true;  // Default status (easy to change!).
-  if (parsed_command_line.HasSwitch(switches::kDisablePreconnect))
-    preconnect_enabled = false;
-  else if (parsed_command_line.HasSwitch(switches::kEnablePreconnect))
-    preconnect_enabled = true;
   chrome_browser_net::PredictorInit dns_prefetch(
       user_prefs,
       local_state,
-      preconnect_enabled,
+      parsed_command_line.HasSwitch(switches::kEnablePreconnect),
       parsed_command_line.HasSwitch(switches::kPreconnectDespiteProxy));
 
 #if defined(OS_WIN)