Lazy load chrome.* APIs

chrome/renderer/extensions/v8_schema_registry.h

 // Copyright (c) 2012 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 CHROME_RENDERER_EXTENSIONS_V8_SCHEMA_REGISTRY_H_
 #define CHROME_RENDERER_EXTENSIONS_V8_SCHEMA_REGISTRY_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
+#include "chrome/renderer/extensions/scoped_persistent.h"
 #include "v8/include/v8.h"
 
 namespace extensions {
 
 // A registry for the v8::Value representations of extension API schemas.
 // In a way, the v8 counterpart to ExtensionAPI.
 class V8SchemaRegistry {
  public:
   V8SchemaRegistry();
   ~V8SchemaRegistry();
 
   // Returns a v8::Array with all the schemas for the APIs in |apis|.
   v8::Handle<v8::Array> GetSchemas(const std::set<std::string>& apis);
 
- private:
   // Returns a v8::Object for the schema for |api|, possibly from the cache.
   v8::Handle<v8::Object> GetSchema(const std::string& api);
 
+ private:
   // Cache of schemas.
   typedef std::map<std::string, v8::Persistent<v8::Object> > SchemaCache;
   SchemaCache schema_cache_;
 
   // Single per-instance v8::Context to create v8::Values.
-  v8::Persistent<v8::Context> context_;
+  ScopedPersistent<v8::Context> context_;
 
   DISALLOW_COPY_AND_ASSIGN(V8SchemaRegistry);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_V8_SCHEMA_REGISTRY_H_