[PPAPI] Added a new Var subclass, ResourceVar.

ppapi/shared_impl/var.cc

Index: ppapi/shared_impl/var.cc
diff --git a/ppapi/shared_impl/var.cc b/ppapi/shared_impl/var.cc
index e3ea224de4b746566c7d06a5ff83dad9ba031eae..6b99d980abe232e81b21f9e962905da9f5826ecd 100644
--- a/ppapi/shared_impl/var.cc
+++ b/ppapi/shared_impl/var.cc
@@ -91,6 +91,10 @@ DictionaryVar* Var::AsDictionaryVar() {
   return NULL;
 }
 
+ResourceVar* Var::AsResourceVar() {
+  return NULL;
+}
+
 PP_Var Var::GetPPVar() {
   int32 id = GetOrCreateVarID();
   if (!id)
@@ -207,5 +211,46 @@ ArrayBufferVar* ArrayBufferVar::FromPPVar(PP_Var var) {
   return var_object->AsArrayBufferVar();
 }
 
+// ResourceVar -----------------------------------------------------------------
+
+ResourceInfo::ResourceInfo()
+    : pending_renderer_id(0),
+      resource_id(0),
+      file_system_type(PP_FILESYSTEMTYPE_INVALID) {
+}
+
+ResourceVar::ResourceVar() {}
+
+ResourceVar::~ResourceVar() {}
+
+void ResourceVar::SetPendingId(int pending_renderer_id) {
+  data_.pending_renderer_id = pending_renderer_id;
+}
+
+void ResourceVar::SetResourceId(int resource_id) {
+  data_.resource_id = resource_id;
+}
+
+void ResourceVar::SetFileSystemType(PP_FileSystemType file_system_type) {
+  data_.file_system_type = file_system_type;
+}
+
+ResourceVar* ResourceVar::AsResourceVar() {
+  return this;
+}
+
+PP_VarType ResourceVar::GetType() const {
+  // TODO(mgiuca): Return PP_VARTYPE_RESOURCE, once that is a valid enum value.
+  NOTREACHED();
+  return PP_VARTYPE_UNDEFINED;
+}
+
+// static
+ResourceVar* ResourceVar::FromPPVar(PP_Var var) {
+  // TODO(mgiuca): Implement this function, once PP_VARTYPE_RESOURCE is
+  // introduced.
+  return NULL;
+}
+
 }  // namespace ppapi