Convert resources to take an instance key instead of an Instance*.

ppapi/cpp/private/flash_net_connector.cc

Index: ppapi/cpp/private/flash_net_connector.cc
diff --git a/ppapi/cpp/private/flash_net_connector.cc b/ppapi/cpp/private/flash_net_connector.cc
index 970740d2946723feb43a95c55a8af6e10733e2e5..b448e7ec78d578b74cce722f3de5284e8f055b32 100644
--- a/ppapi/cpp/private/flash_net_connector.cc
+++ b/ppapi/cpp/private/flash_net_connector.cc
@@ -6,7 +6,7 @@
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/cpp/completion_callback.h"
-#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/instance_handle.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/module_impl.h"
 
@@ -22,7 +22,7 @@ template <> const char* interface_name<PPB_Flash_NetConnector>() {
 
 namespace flash {
 
-NetConnector::NetConnector(const Instance& instance) {
+NetConnector::NetConnector(const InstanceHandle& instance) {
   if (has_interface<PPB_Flash_NetConnector>()) {
     PassRefFromConstructor(get_interface<PPB_Flash_NetConnector>()->Create(
         instance.pp_instance()));