Instantiate a NetworkChangeNotifier to have chromium transparently handle interface

changes.

Change-Id: If48d2934ce29d68b9c31a1d120fe8f134f277a33

media/libstagefright/chromium_http/support.cpp

@@ -41,6 +41,7 @@ namespace android {
 static Mutex gNetworkThreadLock;
 static base::Thread *gNetworkThread = NULL;
 static scoped_refptr<net::URLRequestContext> gReqContext;
+static scoped_ptr<net::NetworkChangeNotifier> gNetworkChangeNotifier;
 
 static void InitializeNetworkThreadIfNecessary() {
     Mutex::Autolock autoLock(gNetworkThreadLock);
@@ -52,6 +53,8 @@ static void InitializeNetworkThreadIfNecessary() {
 
         gReqContext = new SfRequestContext;
 
+        gNetworkChangeNotifier.reset(net::NetworkChangeNotifier::Create());
+
         net::AndroidNetworkLibrary::RegisterSharedInstance(
                 new SfNetworkLibrary);
     }