Lazy load chrome.* APIs

chrome/renderer/extensions/v8_schema_registry.cc

 // 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.
 
 #include "chrome/renderer/extensions/v8_schema_registry.h"
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "chrome/common/extensions/api/extension_api.h"
 #include "content/public/renderer/v8_value_converter.h"
 
 using content::V8ValueConverter;
 
 namespace extensions {
 
 V8SchemaRegistry::V8SchemaRegistry() : context_(v8::Context::New()) {}
 
 V8SchemaRegistry::~V8SchemaRegistry() {
   v8::Isolate* isolate = context_->GetIsolate();
   for (SchemaCache::iterator i = schema_cache_.begin();
       i != schema_cache_.end(); ++i) {
     i->second.Dispose(isolate);
   }
-  context_.Dispose(isolate);
 }
 
 v8::Handle<v8::Array> V8SchemaRegistry::GetSchemas(
     const std::set<std::string>& apis) {
-  v8::Context::Scope context_scope(context_);
+  v8::Context::Scope context_scope(context_.get());
   v8::Handle<v8::Array> v8_apis(v8::Array::New(apis.size()));
   size_t api_index = 0;
   for (std::set<std::string>::const_iterator i = apis.begin(); i != apis.end();
       ++i) {
     v8_apis->Set(api_index++, GetSchema(*i));
   }
   return v8_apis;
 }
 
 v8::Handle<v8::Object> V8SchemaRegistry::GetSchema(const std::string& api) {
   SchemaCache::iterator maybe_schema = schema_cache_.find(api);
   if (maybe_schema != schema_cache_.end())
     return maybe_schema->second;
 
   const base::DictionaryValue* schema =
       ExtensionAPI::GetSharedInstance()->GetSchema(api);
   CHECK(schema) << api;
 
   scoped_ptr<V8ValueConverter> v8_value_converter(V8ValueConverter::create());
   v8::Persistent<v8::Object> v8_schema =
       v8::Persistent<v8::Object>::New(
           context_->GetIsolate(),
           v8::Handle<v8::Object>::Cast(
-              v8_value_converter->ToV8Value(schema, context_)));
+              v8_value_converter->ToV8Value(schema, context_.get())));
   CHECK(!v8_schema.IsEmpty());
   schema_cache_[api] = v8_schema;
   return v8_schema;
 }
 
 }  // namespace extensions