Send PING to check the status of the SPDY connection.

net/spdy/spdy_proxy_client_socket_unittest.cc

Index: net/spdy/spdy_proxy_client_socket_unittest.cc
===================================================================
--- net/spdy/spdy_proxy_client_socket_unittest.cc	(revision 105385)
+++ net/spdy/spdy_proxy_client_socket_unittest.cc	(working copy)
@@ -57,6 +57,8 @@
  public:
   SpdyProxyClientSocketTest();
 
+  virtual void SetUp();
+
   virtual void TearDown();
 
  protected:
@@ -149,6 +151,11 @@
                                             false)) {
 }
 
+void SpdyProxyClientSocketTest::SetUp() {
+  // Disable sending PING.
+  SpdySession::set_enable_ping_based_connection_checking(false);
+}
+
 void SpdyProxyClientSocketTest::TearDown() {
   if (session_ != NULL)
     session_->spdy_session_pool()->CloseAllSessions();
@@ -157,6 +164,8 @@
   // Empty the current queue.
   MessageLoop::current()->RunAllPending();
   PlatformTest::TearDown();
+  // Enable sending PING.
+  SpdySession::set_enable_ping_based_connection_checking(true);
 }
 
 void SpdyProxyClientSocketTest::Initialize(MockRead* reads,