Add PepperTryCatch and V8ObjectVar classes

content/renderer/pepper/v8object_var.h

-// Copyright (c) 2012 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.
 
-#ifndef CONTENT_RENDERER_PEPPER_NPOBJECT_VAR_H_
-#define CONTENT_RENDERER_PEPPER_NPOBJECT_VAR_H_
+#ifndef CONTENT_RENDERER_PEPPER_V8OBJECT_VAR_H_
+#define CONTENT_RENDERER_PEPPER_V8OBJECT_VAR_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "content/common/content_export.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/shared_impl/var.h"
-#include "content/common/content_export.h"
-
-typedef struct NPObject NPObject;
-typedef struct _NPVariant NPVariant;
-typedef void* NPIdentifier;
+#include "v8/include/v8.h"
 
 namespace ppapi {
 
-// NPObjectVar -----------------------------------------------------------------
+// V8ObjectVar -----------------------------------------------------------------
 
 // Represents a JavaScript object Var. By itself, this represents random
-// NPObjects that a given plugin (identified by the resource's module) wants to
+// v8 objects that a given plugin (identified by the resource's module) wants to
 // reference. If two different modules reference the same NPObject (like the
-// "window" object), then there will be different NPObjectVar's (and hence
+// "window" object), then there will be different V8ObjectVar's (and hence
 // PP_Var IDs) for each module. This allows us to track all references owned by
 // a given module and free them when the plugin exits independently of other
 // plugins that may be running at the same time.
-class NPObjectVar : public Var {
+class V8ObjectVar : public Var {
  public:
-  // You should always use FromNPObject to create an NPObjectVar. This function
-  // guarantees that we maintain the 1:1 mapping between NPObject and
-  // NPObjectVar.
-  NPObjectVar(PP_Instance instance, NPObject* np_object);
+  V8ObjectVar(PP_Instance instance, v8::Handle<v8::Object> v8_object);
 
   // Var overrides.
-  virtual NPObjectVar* AsNPObjectVar() OVERRIDE;
+  virtual V8ObjectVar* AsV8ObjectVar() OVERRIDE;
   virtual PP_VarType GetType() const OVERRIDE;
 
-  // Returns the underlying NPObject corresponding to this NPObjectVar.
-  // Guaranteed non-NULL.
-  NPObject* np_object() const { return np_object_; }
+  // Returns the underlying v8 object corresponding to this V8ObjectVar. This
+  // should only be used on the stack.
+  v8::Local<v8::Object> GetHandle() const;
 
   // Notification that the instance was deleted, the internal reference will be
   // zeroed out.
   void InstanceDeleted();
 
   // Possibly 0 if the object has outlived its instance.
-  PP_Instance pp_instance() const { return pp_instance_; }
+  PP_Instance instance() const { return instance_; }
 
   // Helper function that converts a PP_Var to an object. This will return NULL
   // if the PP_Var is not of object type or the object is invalid.
-  CONTENT_EXPORT static scoped_refptr<NPObjectVar> FromPPVar(PP_Var var);
+  CONTENT_EXPORT static scoped_refptr<V8ObjectVar> FromPPVar(PP_Var var);
 
  private:
-  virtual ~NPObjectVar();
+  virtual ~V8ObjectVar();
 
-  // Possibly 0 if the object has outlived its instance.
-  PP_Instance pp_instance_;
+  PP_Instance instance_;
 
-  // Guaranteed non-NULL, this is the underlying object used by WebKit. We
-  // hold a reference to this object.
-  NPObject* np_object_;
+  v8::Persistent<v8::Object> v8_object_;
 
-  DISALLOW_COPY_AND_ASSIGN(NPObjectVar);
+  DISALLOW_COPY_AND_ASSIGN(V8ObjectVar);
 };
 
 }  // ppapi
 
-#endif  // CONTENT_RENDERER_PEPPER_NPOBJECT_VAR_H_
+#endif  // CONTENT_RENDERER_PEPPER_V8OBJECT_VAR_H_