Memory leak fix, log file reopen, remote ip fix, connection idle timeout,

pidfile.

SPDY frames were leaking when used with DataFrame and OutputList.
HUP signal will now reopen the log file.
Remote IP obtained for 'forward-ip-header' was incorrect.
Added connection idle timeout.
Fixed up pidfile handling.
Flip server now creates and locks a pid file.

Patch from Kevin Lindsay: kelindsay@gmail.com

BUG=none
TEST=self

Review URL: http://codereview.chromium.org/6332010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72046 0039d316-1c4b-4281-b951-d872f2087c98

net/tools/flip_server/flip_config.h

@@ -136,6 +136,7 @@ public:
    bool wait_for_iface_;
    int ssl_session_expiry_;
    bool ssl_disable_compression_;
+   int idle_timeout_s_;
 
    FlipConfig() :
        server_think_time_in_s_(0),
@@ -143,7 +144,8 @@ public:
        forward_ip_header_enabled_(false),
        wait_for_iface_(false),
        ssl_session_expiry_(300),
-       ssl_disable_compression_(false)
+       ssl_disable_compression_(false),
+       idle_timeout_s_(300)
        {}
 
    ~FlipConfig() {}