Use macros to define pepper interfaces

ppapi/proxy/ppb_var_proxy.cc

Index: ppapi/proxy/ppb_var_proxy.cc
diff --git a/ppapi/proxy/ppb_var_proxy.cc b/ppapi/proxy/ppb_var_proxy.cc
index 765deef1696a64188e4cfa5ff2295de447196ded..4ee6cc1a347fdea829731bec20b7f78363e2c543 100644
--- a/ppapi/proxy/ppb_var_proxy.cc
+++ b/ppapi/proxy/ppb_var_proxy.cc
@@ -46,37 +46,10 @@ const PPB_Var var_interface = {
   &VarToUtf8
 };
 
-InterfaceProxy* CreateVarProxy(Dispatcher* dispatcher,
-                               const void* target_interface) {
-  return new PPB_Var_Proxy(dispatcher, target_interface);
-}
-
 }  // namespace
 
-PPB_Var_Proxy::PPB_Var_Proxy(Dispatcher* dispatcher,
-                             const void* target_interface)
-    : InterfaceProxy(dispatcher, target_interface) {
-}
-
-PPB_Var_Proxy::~PPB_Var_Proxy() {
-}
-
-// static
-const InterfaceProxy::Info* PPB_Var_Proxy::GetInfo() {
-  static const Info info = {
-    &var_interface,
-    PPB_VAR_INTERFACE,
-    INTERFACE_ID_PPB_VAR,
-    false,
-    &CreateVarProxy,
-  };
-  return &info;
-}
-
-bool PPB_Var_Proxy::OnMessageReceived(const IPC::Message& msg) {
-  // All PPB_Var calls are handled locally; there is no need to send or receive
-  // messages here.
-  return false;
+const PPB_Var* GetPPB_Var_Interface() {
+  return &var_interface;
 }
 
 }  // namespace proxy