Create thread-safe RendererExtensionRegistry from ExtensionSet

chrome/renderer/content_settings_observer.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/content_settings_observer.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "components/content_settings/content/common/content_settings_messages.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/renderer/document_state.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_view.h"
 #include "third_party/WebKit/public/platform/WebContentSettingCallbacks.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/web/WebDataSource.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFrameClient.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "url/url_constants.h"
 
 #if defined(ENABLE_EXTENSIONS)
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/permissions/api_permission.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "extensions/renderer/dispatcher.h"
+#include "extensions/renderer/renderer_extension_registry.h"
 #endif
 
 using blink::WebContentSettingCallbacks;
 using blink::WebDataSource;
 using blink::WebDocument;
 using blink::WebFrame;
 using blink::WebSecurityOrigin;
 using blink::WebString;
 using blink::WebURL;
 using blink::WebView;
@@ skipping 630 matching lines @@
 const extensions::Extension* ContentSettingsObserver::GetExtension(
     const WebSecurityOrigin& origin) const {
   if (!base::EqualsASCII(base::StringPiece16(origin.protocol()),
                          extensions::kExtensionScheme))
     return NULL;
 
   const std::string extension_id = origin.host().utf8().data();
   if (!extension_dispatcher_->IsExtensionActive(extension_id))
     return NULL;
 
-  return extension_dispatcher_->extensions()->GetByID(extension_id);
+  return extensions::RendererExtensionRegistry::GetRegistry()->GetByID(
+      extension_id);
 }
 #endif
 
 bool ContentSettingsObserver::IsWhitelistedForContentSettings() const {
   if (should_whitelist_)
     return true;
 
   // Whitelist ftp directory listings, as they require JavaScript to function
   // properly.
   if (render_frame()->IsFTPDirectoryListing())
@@ skipping 32 matching lines @@
 
   // If the scheme is file:, an empty file name indicates a directory listing,
   // which requires JavaScript to function properly.
   if (base::EqualsASCII(protocol, url::kFileScheme)) {
     return document_url.SchemeIs(url::kFileScheme) &&
            document_url.ExtractFileName().empty();
   }
 
   return false;
 }