Convert to new enter method

ppapi/thunk/enter.cc

Index: ppapi/thunk/enter.cc
diff --git a/ppapi/thunk/enter.cc b/ppapi/thunk/enter.cc
index 43e80fefd9380624241cb3f72ff8c0adcc219acd..2b0057181e11f6d30a87999ce61f1bda2d78194b 100644
--- a/ppapi/thunk/enter.cc
+++ b/ppapi/thunk/enter.cc
@@ -104,6 +104,26 @@ void EnterBase::SetStateForResourceError(PP_Resource pp_resource,
   }
 }
 
+void EnterBase::SetStateForFunctionError(PP_Instance pp_instance,
+                                         void* object,
+                                         bool report_error) {
+  if (object)
+    return;  // Everything worked.
+
+  retval_ = PP_ERROR_BADARGUMENT;
+
+  // We choose to silently ignore the error when the pp_instance is null as
+  // for PP_Resources above.
+  if (report_error && pp_instance) {
+    std::string message;
+    message = base::StringPrintf(
+        "0x%X is not a valid instance ID.",
+        pp_instance);
+    PpapiGlobals::Get()->BroadcastLogWithSource(0, PP_LOGLEVEL_ERROR,
+                                                std::string(), message);
+  }
+}
+
 }  // namespace subtle
 
 EnterResourceCreation::EnterResourceCreation(PP_Instance instance)
@@ -114,7 +134,12 @@ EnterResourceCreation::~EnterResourceCreation() {
 }
 
 EnterInstance::EnterInstance(PP_Instance instance)
-    : EnterFunctionNoLock<PPB_Instance_FunctionAPI>(instance, true) {
+    : EnterFunction<PPB_Instance_FunctionAPI>(instance, true) {
+}
+
+EnterInstance::EnterInstance(PP_Instance instance,
+                             const PP_CompletionCallback& callback)
+    : EnterFunction<PPB_Instance_FunctionAPI>(instance, callback, true) {
 }
 
 EnterInstance::~EnterInstance() {