Lazy load chrome.* APIs

chrome/renderer/extensions/i18n_custom_bindings.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/i18n_custom_bindings.h"
 
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/extensions/message_bundle.h"
 #include "content/public/renderer/render_view.h"
 #include "grit/renderer_resources.h"
 #include "v8/include/v8.h"
 
 namespace extensions {
 
-I18NCustomBindings::I18NCustomBindings()
-    : ChromeV8Extension(NULL) {
+I18NCustomBindings::I18NCustomBindings(Dispatcher* dispatcher,
+                                       v8::Handle<v8::Context> context)
+    : ChromeV8Extension(dispatcher, context) {
   RouteStaticFunction("GetL10nMessage", &GetL10nMessage);
 }
 
 // static
 v8::Handle<v8::Value> I18NCustomBindings::GetL10nMessage(
     const v8::Arguments& args) {
+  I18NCustomBindings* self = GetFromArguments<I18NCustomBindings>(args);
+
   if (args.Length() != 3 || !args[0]->IsString()) {
     NOTREACHED() << "Bad arguments";
     return v8::Undefined();
   }
 
   std::string extension_id;
   if (args[2]->IsNull() || !args[2]->IsString()) {
     return v8::Undefined();
   } else {
     extension_id = *v8::String::Utf8Value(args[2]->ToString());
     if (extension_id.empty())
       return v8::Undefined();
   }
 
   L10nMessagesMap* l10n_messages = GetL10nMessagesMap(extension_id);
   if (!l10n_messages) {
     // Get the current RenderView so that we can send a routed IPC message
     // from the correct source.
-    content::RenderView* renderview = GetCurrentRenderView();
+    content::RenderView* renderview = self->GetRenderView();
     if (!renderview)
       return v8::Undefined();
 
     L10nMessagesMap messages;
     // A sync call to load message catalogs for current extension.
     renderview->Send(new ExtensionHostMsg_GetMessageBundle(
         extension_id, &messages));
 
     // Save messages we got.
     ExtensionToL10nMessagesMap& l10n_messages_map =
@@ skipping 22 matching lines @@
   } else if (args[1]->IsString()) {
     // chrome.i18n.getMessage("message_name", "one param");
     substitutions.push_back(*v8::String::Utf8Value(args[1]->ToString()));
   }
 
   return v8::String::New(ReplaceStringPlaceholders(
       message, substitutions, NULL).c_str());
 }
 
 }  // namespace extension