Block navigations in extensions via ShouldTransferNavigation (not via OpenURL).

content/public/browser/web_contents_delegate.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 "content/public/browser/web_contents_delegate.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "build/build_config.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/security_style_explanations.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/security_style.h"
 #include "content/public/common/url_constants.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace content {
 
 WebContentsDelegate::WebContentsDelegate() {
 }
 
 WebContents* WebContentsDelegate::OpenURLFromTab(WebContents* source,
                                                  const OpenURLParams& params) {
   return nullptr;
 }
 
-bool WebContentsDelegate::ShouldTransferNavigation() {
+bool WebContentsDelegate::ShouldTransferNavigation(
+    bool is_main_frame_navigation) {
   return true;
 }
 
 bool WebContentsDelegate::IsPopupOrPanel(const WebContents* source) const {
   return false;
 }
 
 bool WebContentsDelegate::CanOverscrollContent() const { return false; }
 
 gfx::Rect WebContentsDelegate::GetRootWindowResizerRect() const {
@@ skipping 215 matching lines @@
 void WebContentsDelegate::ShowCertificateViewerInDevTools(
     WebContents* web_contents,
     int cert_id) {
 }
 
 void WebContentsDelegate::RequestAppBannerFromDevTools(
     content::WebContents* web_contents) {
 }
 
 }  // namespace content