Add PepperTryCatch and V8ObjectVar classes

content/renderer/pepper/v8object_var.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/renderer/pepper/npobject_var.h"
+#include "content/renderer/pepper/v8object_var.h"
 
 #include "base/logging.h"
+#include "content/public/renderer/pepper_plugin_instance.h"
 #include "content/renderer/pepper/host_globals.h"
-#include "content/renderer/pepper/host_var_tracker.h"
 #include "ppapi/c/pp_var.h"
-#include "third_party/WebKit/public/web/WebBindings.h"
-
-using blink::WebBindings;
 
 namespace ppapi {
 
-// NPObjectVar -----------------------------------------------------------------
+// V8ObjectVar -----------------------------------------------------------------
 
-NPObjectVar::NPObjectVar(PP_Instance instance, NPObject* np_object)
-    : pp_instance_(instance), np_object_(np_object) {
-  WebBindings::retainObject(np_object_);
-  content::HostGlobals::Get()->host_var_tracker()->AddNPObjectVar(this);
+V8ObjectVar::V8ObjectVar(PP_Instance instance,
+                         v8::Handle<v8::Object> v8_object)
+    : instance_(instance) {
+  v8_object_.Reset(
+      content::PepperPluginInstance::Get(instance_)->GetIsolate(), v8_object);
+  content::HostGlobals::Get()->host_var_tracker()->AddV8ObjectVar(this);
 }
 
-NPObjectVar::~NPObjectVar() {
-  if (pp_instance())
-    content::HostGlobals::Get()->host_var_tracker()->RemoveNPObjectVar(this);
-  WebBindings::releaseObject(np_object_);
+V8ObjectVar::~V8ObjectVar() {
+  if (instance_)
+    content::HostGlobals::Get()->host_var_tracker()->RemoveV8ObjectVar(this);
+  v8_object_.Reset();
 }
 
-NPObjectVar* NPObjectVar::AsNPObjectVar() { return this; }
+V8ObjectVar* V8ObjectVar::AsV8ObjectVar() {
+  return this;
+}
 
-PP_VarType NPObjectVar::GetType() const { return PP_VARTYPE_OBJECT; }
+PP_VarType V8ObjectVar::GetType() const {
+  return PP_VARTYPE_OBJECT;
+}
 
-void NPObjectVar::InstanceDeleted() {
-  DCHECK(pp_instance_);
-  content::HostGlobals::Get()->host_var_tracker()->RemoveNPObjectVar(this);
-  pp_instance_ = 0;
+v8::Local<v8::Object> V8ObjectVar::GetHandle() const {
+  content::PepperPluginInstance* instance =
+      content::PepperPluginInstance::Get(instance_);
+  if (instance)
+    return v8::Local<v8::Object>::New(instance->GetIsolate(), v8_object_);
+  return v8::Local<v8::Object>();
+}
+
+void V8ObjectVar::InstanceDeleted() {
+  // This is called by the HostVarTracker which will take care of removing us
+  // from its set.
+  DCHECK(instance_);
+  instance_ = 0;
 }
 
 // static
-scoped_refptr<NPObjectVar> NPObjectVar::FromPPVar(PP_Var var) {
+scoped_refptr<V8ObjectVar> V8ObjectVar::FromPPVar(PP_Var var) {
   if (var.type != PP_VARTYPE_OBJECT)
-    return scoped_refptr<NPObjectVar>(NULL);
+    return scoped_refptr<V8ObjectVar>(NULL);
   scoped_refptr<Var> var_object(
       PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
   if (!var_object.get())
-    return scoped_refptr<NPObjectVar>();
-  return scoped_refptr<NPObjectVar>(var_object->AsNPObjectVar());
+    return scoped_refptr<V8ObjectVar>();
+  return scoped_refptr<V8ObjectVar>(var_object->AsV8ObjectVar());
 }
 
 }  // namespace ppapi